
795 N.E.2d 887 (2003)
342 Ill. App.3d 696
277 Ill.Dec. 219
The PEOPLE of the State of Illinois, Plaintiff-Appellee,
v.
Melvin CLIFTON, Defendant-Appellant.
The People of the State of Illinois, Plaintiff-Appellee,
v.
Vincent Galloway, Defendant-Appellant.
No. 1-98-2126, 1-98-2384.
Appellate Court of Illinois, First District, First Division.
August 4, 2003.
*889 Richard A. Devine, State's Attorney, Chicago (Renee Goldfarb, Margaret J. Campos and Christina C. Frenzel, Assistant State's Attorneys, of counsel), for the People.
Michael J. Pelletier and Donna Finch, State Appellate Defender's Office of Chicago, for Appellants.


*890 Modified Opinion Pursuant to Supervisory Order of the Illinois Supreme Court

Presiding Justice GORDON delivered the opinion of the court:
In these two consolidated cases, co-defendants Melvin Clifton and Vincent Galloway appeal from the contemporaneous respective judgments of the trial court convicting them each of first degree murder, attempted first degree murder and aggravated battery with a firearm. Galloway argues on appeal that portions of the gang-related testimony presented at trial were hearsay; both he and Clifton argue that such testimony was irrelevant and prejudicial and was offered solely to inflame the jury. Clifton argues that because the name of one of the witnesses providing that testimony was submitted on the eve of trial, the State thereby committed a discovery violation. Clifton also argues that he was not tried within 120 days as required by the speedy trial statute (725 ILCS 5/103-5 (West 1998)), and therefore his counsel's failure to move for dismissal for lack of a speedy trial denied him effective assistance of counsel. Finally, Clifton argues that there was insufficient evidence to prove him guilty beyond a reasonable doubt either as a principal or on an accountability theory. For the reasons set forth below, we affirm the convictions of each defendant and remand for clarification with respect to the sentence of codefendant Galloway.

BACKGROUND
Following simultaneous but severed jury trials, Galloway and Clifton were found guilty of the first degree murder of Leon Holton (also known as Milkman) and of attempted first degree murder and aggravated battery with a firearm in the shooting of Eddie Brown. Galloway was sentenced to extended prison terms of 80 years for first degree murder and 40 years for attempted first degree murder, to be served consecutively. Clifton received sentences of 55 years for first degree murder and 25 years for attempted first degree murder, also to be served consecutively.
Prior to trial, defendants, who were members of the Gangster Disciples street gang, moved in limine to bar the State from introducing evidence of their gang affiliation on the ground that it would be more prejudicial than probative. The State had sought to introduce testimony by Tom Richardson, a Chicago police department gang crimes specialist, to help establish what the State asserted was the gang-related motive for the crime. According to the State, because of an alleged leadership vacuum in the Gangster Disciples resulting from the federal indictment of 39 gang members on August 31, 1995, there was jockeying among remaining gang members for leadership positions. As a result, a gang leader named Chuck Dorsey was killed in January 1996, and Holton was suspected of having killed him. The State's theory was that Gangster Disciples leader Larry Hoover was angry that Dorsey had been killed, and Galloway and Clifton, who held subordinate leadership positions in the gang, killed Holton in retaliation.
On February 5, 1998, the court heard argument and granted defendants' motion in limine, stating that there would be no mention of gang affiliation. On February 19, the date that jury selection was scheduled to begin, the State submitted a motion to allow gang-related evidence as motive, including the testimony of gang crimes specialist Richardson and of Philander Jenkins, a cooperating witness in a concurrent federal investigation of the Gangster Disciples. The State also filed a supplemental answer to discovery adding *891 Jenkins' name to its list of potential witnesses. The case was continued on that date and on subsequent dates thereafter, with jury selection ultimately commencing on March 10, 1998. Jenkins testified at a pre-trial hearing on March 3, 1998, and on March 6, the trial court granted the State's motion as to Jenkins, concluding that his testimony was sufficiently relevant to be presented to the jury, and that there was no discovery violation even though Jenkins was not listed as a potential witness until February 19. The court subsequently stated on March 11 that Richardson could testify as to the leadership structure of the Gangster Disciples and as to which of its leaders were in federal custody, but he could not state the reason for the shootings.
The following evidence was adduced at trial. Eddie Brown testified for the State that on March 10, 1996, he and the murder victim, Leon Holton, were driving around in Brown's car when Holton called someone on his cell phone and then said he had to go and meet someone. Brown drove Holton to 78th Street where Holton saw a maroon Oldsmobile with the person he was to meet inside. Brown honked at the car, and the two cars pulled to the side of the road, with Brown's car behind the Oldsmobile. Brown said the two men in the Olds got out of their car and approached his car. He identified (in court) the man who got out on the passenger side as Galloway, whom he knew at the time as Legs Diamond, a member of the Gangster Disciples. The man who got out on the driver's side was hopping on a crutch and had a cast on his leg. Brown said that man entered Brown's car and sat behind Brown in the back seat, and Galloway entered and sat in the back seat on the passenger side behind Holton. Galloway told Brown the other man's name was Melvin, and Brown identified him in court as Clifton. Brown said once the two men were in the car, he and Galloway talked about the Chicago Bulls basketball game that day. Holton then asked Clifton what was up, and Clifton said he had paged someone and was waiting for a call back on his cell phone.
Brown testified further that as he was about to turn around and say something, he noticed out of the corner of his right eye what looked like a silver tube extension behind him, and then heard a "poof sound" like a gun with a silencer, and felt a pain in his neck and knew he had been shot. Brown then grabbed the door handle, and as he was trying to get out of the car he felt a sharp pain in his right hip and another in his back on the right side. Brown got out of the car and tried to run but fell because he had been shot in the hip. As he was lying in front of his car, Brown said he saw Galloway get out of the car on the passenger side, walk toward him and stand directly over him, pointing a gun at his head. Galloway then and there shot Brown in the forehead and the upper right chest, and thereupon turned to Clifton, who had exited the car and was standing nearby, and told him he was out of bullets. Galloway and Clifton then ran to the maroon Olds, with Clifton hopping on his crutch, and the car took off.
Brown stated that he next called his sister on his cell phone, and his niece, Asunta Saddler, answered. Brown told her who had shot him and where he was, and subsequently the police and an ambulance arrived. Brown talked to a police officer while he was in the ambulance, and told him who shot him. Brown was then taken to a hospital.
The next afternoon, March 11, 1996, Brown said he talked to two detectives, a male and a female, while he was in the hospital. They showed him four or five photos, from which he identified Galloway. About two weeks later, on April 4, 1996, *892 Brown went to the police station and viewed a series of photos from which he identified Clifton, whom he also identified in court. On May 1, 1996, Brown went back to the police station and viewed a lineup from which he identified Galloway. Three days later he viewed another lineup and identified Clifton.
On cross-examination by Clifton's counsel, Brown conceded that he had not seen Clifton with a gun. Brown also said he learned when he was in the hospital that Holton had been shot but that he did not know which of them was shot first. According to Brown, when he talked to his niece on his cell phone after the shooting he told her that Galloway had shot him, but he conceded that he did not remember "saying another guy." On March 12, 1996, two days after the shooting, Brown spoke in the hospital to an assistant State's Attorney (ASA) and a Chicago homicide detective, and gave them an eight-page statement. Brown told them it was Galloway who shot him, but admitted in his testimony that although he told the ASA there was a second person, he did not remember telling them the second person's name was Melvin. The parties stipulated that in Brown's eight-page statement he did not mention the name Mel or Melvin as being the second person who was with Galloway.
On redirect, Brown stated that the first time he met Clifton was on March 10, 1996, and that if he did not mention Clifton's name when he talked to the ASA and the police detective two days later, it was probably because he had forgotten it. Brown also testified that on April 4, 1996, after he identified Clifton's photo in a photo array, he asked the police detective what the person's name was and the detective told him. Brown then told the detective that he remembered that the person who was with Galloway was named Melvin. In addition, Brown said he told a grand jury on April 12, 1996, that when he talked to his niece on the night of the shooting, he told her that "Legs Diamond and Melvin" shot him.
Brown's niece, Asunta Saddler, testified for the State that Brown called her at about 8:45 p.m. on March 10, 1996, saying he had been shot and needed help. She asked him who had done it, and he told her "Melvin and Legs Diamond." On cross-examination by Clifton's counsel, Saddler said that is what she told the police when she subsequently spoke to them on the telephone: that "Legs Diamond and Melvin" had done this.
The State's next witness, Chicago police sergeant James Jackson, testified that when he arrived at the scene of the shooting on the night of March 10, 1996, he went to the ambulance and talked to Brown, who told him that Legs Diamond had shot him and that there was another person with him but he did not know his name. Jackson also said he saw a black male with a fatal gunshot wound at the back of his head seated in the front passenger seat of a car parked on the south side of the street. Jackson later learned that the man was Holton. On cross-examination by Clifton's counsel, Jackson conceded that during the conversation in the ambulance Brown told him that Galloway "pulled a handgun" and shot Holton in the head, and that Galloway shot Brown several times when he tried to flee from the car.
Chicago police detective Linda Drozdek stated that she and her partner, Detective George Carl, went to Christ Hospital the night of March 10, 1996, to check on Brown's condition. While they were there, hospital personnel gave Detective Carl a bullet that had been recovered from Brown's clothes. The next day (March 11), Drozdek and Carl went back to the hospital and showed Brown a series of five photographs from which he identified Galloway *893 as Legs Diamond. Brown told them that (unlike the photo) Galloway at present had no hair.
Delilah Hunt next testified for the State. She stated that in March 1996 Holton was her boyfriend. She testified that on the morning of March 10, she and Holton drove to a restaurant and parked next to a car in which Galloway was sitting in the driver's seat. She said Holton got out of their car and got into the front seat of Galloway's car, and the two men talked for 10 to 15 minutes. Hunt said she and Holton then returned to their house, and at some point later, he left. Hunt subsequently learned what had happened to Holton. The next morning, March 11, she met with Chicago police detective John Hamilton, who showed her a series of photographs from which she identified Galloway. Hunt said she noticed that (unlike the photo) Galloway was "bald headed" when she had seen him (the day before) in the restaurant parking lot. About four days after the shooting, Hunt saw Galloway and Clifton sitting together in a car. She said as she rode past, Clifton looked up and pointed at her, but she kept going and went home. About three hours later, Galloway came to her house and asked if Holton or Holton's son, Del, lived there, to which she answered "no." A week or so later, Clifton came to Hunt's house and asked her if someone new had moved onto the block. About three days after that, Galloway returned to Hunt's house and also asked if someone new had moved onto the block. Hunt said because she was "scared," she called the detectives who were in charge of the case "sometime after that." On April 12, 1996, while testifying before a grand jury, Hunt viewed a series of photos and identified Clifton.
The State also called Philander Jenkins, who testified that he had been a member of the Gangster Disciples. Jenkins stated that he was arrested by federal authorities on November 6, 1997, after having sold $4,500 worth of cocaine to a federal informant. Because he was facing a possible penalty of up to life in prison without possibility of parole, Jenkins said he began cooperating with federal authorities. Jenkins also stated that the first time he said anything about the instant case was in mid-February 1998 when he talked to ASA Brian Sexton about it. According to Jenkins, though he spoke to federal authorities several times following his arrest in November 1997, they did not ask him about this case.
Jenkins testified further that he was a Gangster Disciple on August 31, 1995, when 39 members of the gang were indicted in federal court. (Neither Jenkins nor any of the principals in this case was among those indicted.) Jenkins named three of the 39 who he said were board members, which is the rank just below Larry Hoover, the head of the Gangster Disciples. In addition, Jenkins named another of the 39 who he said was a governor, which is the next rank below a board member. Following the August 31 indictments, Jenkins became a regent, which is below a governor. Jenkins identified Clifton in court and said Clifton was his governor.
Jenkins also averred that around September 1995, a man named Chuck was running the Gangster Disciples for the entire city. In January 1996, Chuck was murdered, and Jenkins said he subsequently learned that there had been friction between Chuck and Holton, who held the rank of board member. According to Jenkins, Holton "felt that he should have had the city and not Chuck."
About two months later, in March 1996, Jenkins saw Clifton with a man he subsequently learned was Galloway. A couple of days after that, about four days before *894 Holton's murder, Jenkins attended a Gangster Disciples meeting which he said was called to reassure the members that, despite the previous indictments, "the gang was still going strong." Both Clifton and Galloway were at the meeting. Galloway introduced himself as a (Gangster Disciples) board member, and Clifton, who Jenkins said had a cast and was using crutches, introduced himself as a governor. According to Jenkins, at one point Clifton asked those present if they would kill a board member or governor if they were required to, and they answered yes.
A couple of days later (about two days before Holton's murder), Jenkins said he met with Clifton in response to a page from a gang member named Onion, and Clifton told Jenkins he was "having a problem" and "needed a couple of units," meaning guns. Jenkins obtained a .380 automatic and a Tech 9, and gave them to Clifton. About two weeks after Holton's murder, Jenkins said he gave $500 to a board member named "Godfather," and gave as his reason: "so Melvin [Clifton] could leave town."
Prior to cross-examination by Clifton's counsel, the parties stipulated that Jenkins was debriefed by federal law enforcement officials five times between November 6, 1997, and February 9, 1998. On cross-examination, Jenkins reasserted that during those debriefings, he never told federal authorities that he had any information about Holton's murder. On redirect, Jenkins stated that no one ever identified for him the kind of weapon that was used in Holton's murder.
The State also called Dr. Thamrong Chira, a Cook County medical examiner who performed an autopsy on Holton on March 11, 1996. Dr. Chira testified that Holton had a single gunshot wound entering at the back of his neck on the left side. There was no evidence of close-range firing, which meant that the muzzle of the gun had to be more than 18 inches from the entry wound. Dr. Chira also said the bullet traveled from left to right and from back to front and was found on the right side of Holton's neck. Given those two factors, Dr. Chira said it was more likely that the shooter was in the back seat behind the driver (Clifton's position) rather than on the passenger side. On cross-examination by Clifton's counsel, Dr. Chira conceded that if the person on the passenger side had leaned forward and shot the driver first and then turned and shot Holton on an angle from where the driver was located, it was possible that Holton could have been shot by someone in the rear passenger seat. Dr. Chira said the shot had to have come from a little to the left and behind the victim.
The parties stipulated that if Robert Smith, a Chicago police department firearms examiner, were called, he would testify that in his opinion the fired bullet recovered from Christ Hospital (from Brown's clothes) had the same class characteristics as having been fired from a .380 automatic pistol. Smith would testify that in his opinion the same was true of a fired bullet recovered from Holton's body, and of five cartridge casings recovered from the scene of the shootings.
The State next called Thomas Richardson, a detective in the Chicago police department's gang crimes unit who also was detailed to an ongoing federal investigation of the Gangster Disciples. Richardson's testimony corroborated that of Philander Jenkins as to the gang's leadership hierarchy and the August 31, 1995, federal indictments of 39 Gangster Disciples. Richardson also stated that Holton, the murder victim, had been a board member for two to three years prior to the August 31 indictments and that he was elevated to that position because he was "a very prosperous *895 narcotics dealer on the South Side" and had "a lot of money" and "a lot of power." According to Richardson, after the 39 were indicted, Chuck Dorsey "was given the OK" by Gangster Disciples leader Larry Hoover to take control of the city for the gang. On January 4, 1996, Dorsey was shot and killed.
The State's next witness, Chicago police detective John Hamilton, testified that on April 26, 1996, the Federal Bureau of Investigation (FBI) notified him that Clifton had been taken into custody in Fort Wayne, Indiana. Hamilton and his partner, Detective Timothy Bagdon, went to Fort Wayne and talked to Clifton that evening in an office in the Allen County jail. Upon being asked if he knew where Galloway was, Clifton said he had not seen Galloway since "that date," which he explained was the day Holton was killed.
Galloway was arrested in Chicago on April 30, 1996, and Hamilton said he and Bagdon spoke with him that day. After being advised of his rights, Galloway told them he was a board member with the Gangster Disciples and that he had known Clifton for several years and they were friends. Galloway also said he knew Holton (the murder victim) but that he and Holton were "not close." According to Galloway, Holton had not earned his way up through the ranks as others in the gang had but instead was given his position as a board member "because of his money." Galloway said Holton was not well liked for that reason and "because he threw his weight around." Galloway also denied any knowledge of or involvement in Holton's murder.
Hamilton testified further that he and Bagdon returned to Fort Wayne, Indiana, on May 3, 1996, to bring Clifton back to Cook County. During the drive back to Chicago, Clifton asked Hamilton what was up with his case, and Bagdon advised Clifton of his rights. Hamilton said Clifton then had a conversation with them, stating that he was a governor in the Gangster Disciples and that he knew Galloway and had known him for several years. Clifton also said he knew Holton and knew that he was a board member in the gang. Clifton also denied any knowledge of or participation in Holton's murder.
On cross-examination by Clifton's counsel, Hamilton conceded that when he showed Eddie Brown a photo array that included Clifton's photo, Brown never told him that he saw Clifton with a gun.
The juries found each defendant guilty of the first degree murder of Holton and of attempted first degree murder and aggravated battery with a firearm in the shooting of Brown. As noted previously, Galloway was sentenced to a total of 120 years in prison, and Clifton received sentences totaling 80 years. These two consolidated appeals followed.

ANALYSIS

Hearsay
Galloway argues on appeal that portions of the testimony given by Philander Jenkins and Detective Thomas Richardson were hearsay and that the trial court abused its discretion by admitting that testimony. We agree in part with Galloway that portions of the testimony to which he objected were hearsay, but we conclude that as to those portions, any error in admitting them was harmless.

A. Philander Jenkins' Testimony
According to Galloway, the following portions of testimony given by Jenkins over objection constituted inadmissible hearsay: (1) that after Chuck Dorsey's murder, Jenkins learned from talking to other Gangster Disciples that there had been tension between Holton and Dorsey and that Holton felt he should have been *896 running the gang's Chicago operation instead of Dorsey; (2) that during a Gangster Disciples meeting that Jenkins attended shortly before the shootings, Clifton asked those present if they would kill a board member or governor; and (3) that Clifton told Jenkins two days before the shootings that he needed "units," meaning guns.
The first of the foregoing statements is clearly based on inadmissible hearsay. Jenkins testified that he did not know Holton personally and that he learned of the conflict between Holton and Dorsey from talking to other gang members. Thus Jenkins described a conflict of which he had no personal knowledge and about which he learned from others who were not subject to cross-examination at trial. This meets the definition of rank hearsay. See People v. Rogers, 81 Ill.2d 571, 577, 44 Ill.Dec. 254, 411 N.E.2d 223, 226 (1980) (hearsay defined as "testimony of an out-of-court statement offered to establish the truth of the matter asserted therein, and resting for its value upon the credibility of the out-of-court asserter"). The mere fact that the sources of his information refer to more than one person does not change the character of this testimony as rank hearsay. Cf. Galindo v. Riddell, Inc., 107 Ill.App.3d 139, 145, 62 Ill.Dec. 849, 437 N.E.2d 376, 381 (1982) (testimony about results of survey held to be inadmissible hearsay where survey not shown to have used methods generally accepted in scientific community to produce statistically accurate results). Furthermore, there can be no question that the statement was offered for the truth of the matter asserted: namely, that Holton was in a power conflict with Dorsey as a basis upon which Clifton and Galloway presumed Holton to be Dorsey's killer. See Rogers, 81 Ill.2d at 577, 44 Ill.Dec. 254, 411 N.E.2d at 226. As the trial court noted in a conference out of the presence of the juries, that testimony was "classic hearsay."
The second of the foregoing statements, namely, Clifton's question about killing a board member or a governor, is also inadmissible hearsay with respect to Galloway. The State argues that the question is admissible because it was offered not for the truth of the matter asserted but "for the purpose of showing that defendant Galloway was on notice and had knowledge of certain events that took place before the crime." See People v. Sanchez, 189 Ill.App.3d 1011, 1016, 137 Ill.Dec. 514, 546 N.E.2d 268, 271 (1989). We disagree. If the question were offered to show that Galloway was hatching a plot or attempting to recruit gang members to participate in the killing of a gang official, it clearly would be inadmissible in that it was being offered for the truth of its content. If on the other hand it is offered, as the State contends, to show that Galloway was put on notice that some sort of recruitment was being mounted, such notice on Galloway's part is insufficiently relevant even as part of the chain of evidence necessary to establish Galloway's culpability. Since it was established by direct testimonial evidence at trial that Galloway was present when the crime took place and that he shot Eddie Brown, the only question as to Galloway upon which there was merely circumstantial evidence was whether it was Galloway or Clifton who shot Holton. Thus the only apparent purpose as to Galloway for the State to offer Clifton's question would be toward establishing the accountability of Galloway for Holton's murder even if the actual shooting were done by Clifton. As shall be discussed later, accountability can be shown by a number of factors including the defendant's presence during the planning of the crime. See People v. Walker, 230 Ill. *897 App.3d 377, 388, 171 Ill.Dec. 732, 594 N.E.2d 1252, 1259 (1992). However, establishing that Galloway had notice of Clifton's possible recruitment of fellow gang members to kill a gang official is too remote to help establish Galloway's involvement in that killing, even in conjunction with other evidence. See People v. Floyd, 117 Ill.App.3d 168, 173, 72 Ill.Dec. 725, 453 N.E.2d 30, 33 (1983) (state-of-mind exception to hearsay rule applies only where declarant's state of mind is relevant to a material issue in the case).
The third statement, Clifton's telling Jenkins that he needed guns, is on its face rank hearsay being introduced for the truth of its content. The State presents no argument to suggest that this statement is admissible under any exception to the hearsay rule or that it can be viewed as a verbal act. We do not mean to imply, however, that Jenkins' testimony that he gave two guns to Clifton was hearsay. That statement was clearly based on Jenkins' personal knowledge, and no statement by an out-of-court declarant was involved.

B. Detective Richardson's Testimony
According to Galloway, the following testimony by Detective Richardson was hearsay: (1) that Galloway was a board member in the Gangster Disciples in late 1995 or early 1996; (2) testimony as to the internal organization of the Gangster Disciples: that Larry Hoover was the leader, and that below him, in rank order, were the board members, governors, regents, coordinators, and soldiers; (3) that 39 members of the Gangster Disciples were indicted on August 31, 1995, including some board members and governors; (4) that the murder victim, Holton, was a board member, a position he held for two or three years prior to August 31, 1995, and that he became a board member because he was a "very prosperous narcotics dealer on the South Side" and thus had "a lot of money" and "a lot of power"; and (5) that after the 39 were indicted in August 1995, Hoover gave "the OK" for Chuck Dorsey to take control of the city of Chicago for the gang and that Dorsey was murdered on January 4, 1996.
Police testimony regarding gang activity is admissible if (1) it qualifies as expert opinion, (2) it is relevant, and (3) its prejudicial effect does not outweigh its probative value. People v. Cruzado, 299 Ill.App.3d 131, 141, 233 Ill.Dec. 179, 700 N.E.2d 707, 714-15 (1998); People v. Davenport, 301 Ill.App.3d 143, 150, 234 Ill.Dec. 169, 702 N.E.2d 335, 341 (1998). Regarding the first prong of this test, a witness qualifies as an expert if, "because of his skill, training, or experience, he is better able to form a more accurate opinion as to the matter under consideration than is an ordinary person." People v. Ayala, 208 Ill.App.3d 586, 593, 153 Ill.Dec. 492, 567 N.E.2d 450, 455 (1990). Specialized formal training is unnecessary, and experience alone can qualify a witness as an expert. Ayala, 208 Ill.App.3d at 593, 153 Ill.Dec. 492, 567 N.E.2d at 455. So long as the testimony is based upon information "of a type reasonably relied upon by experts in the field," it is proper "even though the information may not be admissible in evidence." People v. Jackson, 145 Ill.App.3d 626, 634, 99 Ill.Dec. 472, 495 N.E.2d 1207, 1214 (1986).
Detective Richardson clearly qualifies as an expert. He testified at trial that he had been a Chicago police officer for 27 years and a gang specialist for 18. His main function as a gang specialist was to monitor and obtain information about street gangs, including the Gangster Disciples. Further, since 1992 he had been detailed to an investigation with federal authorities into the Gangster Disciples. See Ayala, *898 208 Ill.App.3d at 590, 593-94, 153 Ill.Dec. 492, 567 N.E.2d at 453, 455 (holding qualified as expert a gang crimes specialist with two years' experience in neighborhood where crime occurred); Jackson, 145 Ill. App.3d at 634, 99 Ill.Dec. 472, 495 N.E.2d at 1214 (gang specialist with five years' experience in investigation of gangs in the area held qualified as expert).
However, it still must be determined whether the testimony that Richardson gave at trial qualified as expert opinion. For purposes of our analysis, Richardson's testimony can be divided roughly into two categories: (1) that dealing with the internal hierarchy and structure of the Gangster Disciples, and (2) testimony dealing with more specific matters such as that Holton acquired his board-member position because of his money and power, or that Chuck Dorsey "was given the OK by Larry Hoover" to take control of the city for the gang. As to the first category, there is little question that it qualifies as expert opinion. In People v. Cruzado, 299 Ill.App.3d 131, 233 Ill.Dec. 179, 700 N.E.2d 707 (1998), a gang crimes specialist's testimony as to matters such as gang structure was held to qualify as expert opinion where there was "no showing that the average layperson has any understanding of the inner workings of gangs * * * or of the jury's common knowledge of them." Cruzado, 299 Ill.App.3d at 141, 233 Ill.Dec. 179, 700 N.E.2d at 715. There was no such showing in the instant case. See also People v. Davenport, 301 Ill.App.3d 143, 150, 234 Ill.Dec. 169, 702 N.E.2d 335, 341 (1998) (holding that it was reasonable to conclude that a "layperson does not have the same opportunity to observe and learn about the detailed hierarchy and activities of street gangs as did [gang specialist who testified]").
Richardson's more detailed testimony also qualifies as expert opinion. Similar testimony has been held by other courts to be admissible. In Jackson, for example, a gang specialist not only explained the "organizational structure of the `Black Disciples' around 4410 South State [in Chicago]," he also "identified Ricky Knight as the leader of the unit at 4410 South State, defendant as second in command, and Fields, known as `Stokes' or `Boo Boo,' as the number three man in the unit." Jackson, 145 Ill.App.3d at 630-31, 99 Ill.Dec. 472, 495 N.E.2d at 1212. That testimony was held admissible, with the court emphasizing that it was based "on many different sources, including personal observation and gang infiltration, and [the gang specialist's] testimony that he verified and investigated information learned from others." Jackson, 145 Ill.App.3d at 634, 99 Ill.Dec. 472, 495 N.E.2d at 1214; cf. People v. Washington, 127 Ill.App.3d 365, 386-87, 82 Ill.Dec. 505, 468 N.E.2d 1285, 1300-01 (1984) (investigator's testimony regarding defendant's gang membership held inadmissible where based solely on information from one unnamed informant). The court in Jackson concluded that the gang specialist's testimony "appear[ed] to be based on facts or data reasonably relied upon by experts in the field of street gangs" (Jackson, 145 Ill.App.3d at 634, 99 Ill.Dec. 472, 495 N.E.2d at 1214), explaining:
"As a matter of practicality, the method of information gathering used by [the gang specialist] is probably the only way a non gang member can accumulate details of gang activity and membership rank. Furthermore, [the gang specialist's] testimony is based on more data than are available to an average layperson" (Jackson, 145 Ill.App.3d at 634, 99 Ill.Dec. 472, 495 N.E.2d at 1214-15).
Thus the Jackson court stressed the pragmatic necessity for accessing a number of different sources, as well as the gang specialist's superior capability (compared to *899 that of the layperson) in accessing those sources.
Similarly, in People v. Mendez, 221 Ill. App.3d 868, 871, 164 Ill.Dec. 321, 582 N.E.2d 1265, 1267 (1991), a Chicago police gang crimes specialist testified that two rival gangs existed in the area where a shooting took place and that the petitioner was a member of one of them. The court held that the testimony was properly admitted. Mendez, 221 Ill.App.3d at 874, 164 Ill.Dec. 321, 582 N.E.2d at 1270.
Likewise, the California decision in People v. Gamez, 235 Cal.App.3d 957, 286 Cal.Rptr. 894 (1991), is instructive. In that case, which involved a drive-by shooting arising from a dispute between the rival Southside and Highland Street gangs, one gang expert "opined [that] the shooting was a `pay-back' for a prior shooting by Highland Street against Southside." Gamez, 235 Cal.App.3d at 964, 286 Cal. Rptr. at 896. Another expert "opined [that] defendant was a member of Southside." Gamez, 235 Cal.App.3d at 964, 286 Cal.Rptr. at 896. The defendant argued that such testimony was nothing more than hearsay, but the court disagreed, explaining:
"We fail to see how the officers could proffer an opinion about gangs, and in particular about gangs in the area, without reference to conversations with gang members. * * * To know about the gangs involved, the officers had to speak with members and their rivals. Furthermore, the officers did not simply regurgitate that which they had been told. Rather, they combined what they had been told with other information, including their observations, in establishing a foundation for their opinions." Gamez, 235 Cal.App.3d at 968, 286 Cal. Rptr. at 899-900.
The method described by the Gamez court is essentially the same as the one approved in Jackson: talking to gang members and their rivals and combining that information with information from other sources in arriving at the expert's testimony. See generally Note, The Limitations of Daubert and its Misapplication to Quasi-Scientific Experts, 35 Washburn L.J. 134, 140-47 (1995) (discussing the inappropriateness of applying the Daubert factors to nonscientific testimony such as that of a police gang crimes expert).
In the instant case, Richardson's testimony also was drawn from a variety of sources. Early in his testimony, he described the various ways in which he was able to monitor the Gangster Disciples:
"The best way is to get out on the street and you get in with the gang, the gang members. You talk to them. You talk to rival gang members. We go to different penitentiaries. You talk to members that are incarcerated. We work with C/Is, that's confidential informants, concerned citizens. We deal with the Board of Education, the CAPS program. We deal with outside agencies. Like I said before, the federal government, DEA, FBI, Secret Service, Immigration. We deal with all the suburban police departments. I have contacts in New York, L[os] A[ngeles], Florida, and Texas. We keep in contact with all the gang agencies throughout the United States."
Unlike the investigator in Washington, Richardson drew on a variety of sources including conversations on the street with Gangster Disciples and rival gang members, talks with incarcerated gang members, information gleaned from confidential informants, and contacts with outside agencies such as the FBI and suburban police departments. Because of his role as a gang crimes specialist, he was able to access those sources using a method which, as the Jackson court noted, "is probably the only way a non gang member *900 can accumulate details of gang activity and membership rank." Jackson, 145 Ill. App.3d at 634, 99 Ill.Dec. 472, 495 N.E.2d at 1215. Accordingly, consistent with established precedent, we believe that Richardson's evidence qualified as expert testimony.
As to the second prong of the admissibility test, Richardson's testimony is relevant to the State's gang-related motive. "Relevant evidence is that which has any tendency to make the existence of a fact of consequence to the determination of the action more or less probable than it would be without the evidence." Davenport, 301 Ill.App.3d at 150-51, 234 Ill.Dec. 169, 702 N.E.2d at 341-42. Further, though courts acknowledge that there may be strong prejudice against street gangs, particularly in metropolitan areas, it is nevertheless well established that "[g]ang-related evidence is admissible to show common purpose or design or to provide a motive for an otherwise inexplicable act." Davenport, 301 Ill.App.3d at 151, 234 Ill. Dec. 169, 702 N.E.2d at 342; Cruzado, 299 Ill.App.3d at 142, 233 Ill.Dec. 179, 700 N.E.2d at 715. "However, such evidence must relate to the crime charged." Davenport, 301 Ill.App.3d at 151, 234 Ill.Dec. 169, 702 N.E.2d at 342.
Here, as noted, Richardson's testimony is relevant to the State's gang-related motive, and it is thereby related to the crime charged. His testimony about the indictment of the 39 Gangster Disciples (including some high-ranking members) helped support the State's claim that there was a leadership vacuum in the gang. Richardson also testified that Hoover had named Dorsey to his city-wide leadership post and that Dorsey was subsequently killed, that Holton attained his board member position primarily because of his money and power (and, by implication, not because of merit), and that Galloway and Clifton held leadership positions in the gang below Hoover. If Hoover named Dorsey to his post, it is not unlikely that he would be angry that Dorsey was killed, nor is it unlikely that Galloway and Clifton, as gang leaders below Hoover, might be motivated to kill Holton in retaliation. Thus Richardson's testimony tended to show that defendants had a motive for killing Holton and shooting Brown, and his testimony thus is relevant because it rendered it more likely that they did commit those crimes. See People v. Smith, 141 Ill.2d 40, 56, 152 Ill.Dec. 218, 565 N.E.2d 900, 906 (1990). The same reasoning applies to the testimony of Jenkins, which also was clearly relevant.
It is also manifestly apparent that Richardson's testimony is more probative than prejudicial, thus satisfying the third prong of the test. As noted, gang-related evidence, even though it might be prejudicial, is admissible "to provide a motive for an otherwise inexplicable act." Davenport, 301 Ill.App.3d at 151, 234 Ill.Dec. 169, 702 N.E.2d at 342. Here, were it not for the gang-related evidence, the killing of Holton and the shooting of Brown would be inexplicable. According to the competent evidence presented at trial, the shootings occurred shortly after Galloway and Clifton entered Brown's car. Sitting in the back seat, Galloway talked briefly with Brown, the driver, about the Chicago Bulls game earlier that day. Then, in response to a question from Holton, Clifton said he was waiting for a call on his cell phone. Shortly thereafter, Holton was killed and Brown was shot five times and apparently left for dead. There was no evidence suggesting that this was a drug deal gone sour or indeed suggesting any other motive at all for the shootings. Richardson's gang-related evidence helped establish a motive for these otherwise inexplicable acts and therefore was not more prejudicial than probative. See Cruzado, 299 Ill. *901 App.3d at 142, 233 Ill.Dec. 179, 700 N.E.2d at 715; Davenport, 301 Ill.App.3d at 151, 234 Ill.Dec. 169, 702 N.E.2d at 342. The same is true of Jenkins' testimony, and we therefore reject the argument that it was more prejudicial than probative, and offered solely to inflame the jury.
Even if Richardson's testimony were inadmissible hearsay, it would not necessitate reversal. As previously noted, any error in admitting hearsay testimony was harmless in view of the overwhelming, non-hearsay evidence against Galloway. See People v. Grant, 69 Ill.App.3d 940, 944, 26 Ill.Dec. 257, 387 N.E.2d 1087, 1091 (1979) (trial error deemed harmless where evidence supporting defendant's conviction is so overwhelming that the conviction would result even if the error was eliminated); Davenport, 301 Ill.App.3d at 153, 234 Ill.Dec. 169, 702 N.E.2d at 343 (error deemed harmless where court is satisfied beyond reasonable doubt that it did not contribute to defendant's conviction).
Here, Eddie Brown, the surviving victim, identified Galloway as the man who shot him five times, three of them while Brown was still in the car where Holton was killed. Brown also identified Clifton as the man accompanying Galloway. Thus Galloway was placed by competent testimony with Clifton in the car where (and when) the murder and attempted murder took place, and holding (and firing) a gun of the same caliber as one of the guns that Philander Jenkins testified he gave Clifton a couple of days earlier. As to the gang-related testimony of Jenkins and Richardson, Galloway himself admitted to Detective Hamilton that he was a board member in the Gangster Disciples; that he had known Clifton for several years; and that he knew Holton, who Galloway said had gotten his position as a board member because of his money instead of earning his way up through the ranks. Hence, even if any error in admitting hearsay testimony were eliminated, the evidence remaining against Galloway would still have been overwhelming. Thus Galloway suffered no manifest prejudice (see People v. Lucas, 151 Ill.2d 461, 489, 177 Ill.Dec. 390, 603 N.E.2d 460, 473 (1992)), and it would be reasonable to conclude that any error in admitting hearsay would not have contributed to his conviction (see Davenport, 301 Ill.App.3d at 153, 234 Ill.Dec. 169, 702 N.E.2d at 343).[1]
[Editors' Note: Text omitted pursuant to Supreme Court Rule 23.]
Finally, while this issue was pending on appeal, the United States Supreme Court issued its decision in the case of Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000). In a supplemental brief, Clifton[2] contends that Apprendi renders section 5-8-4(a) of the Unified Code of Corrections (Code) (730 ILCS 5/5-8-4(a)(West 1998)) unconstitutional because that section imposes consecutive *902 sentences if, inter alia, the court makes a factual finding that severe bodily injury occurred during the commission of the crimes in question. Clifton argues that pursuant to Apprendi such a factual determination must be made by a jury and not by the court. Since he was sentenced to consecutive sentences pursuant to this provision, Clifton contends that his sentences must be changed to run concurrently. Also in a supplemental brief, the State contends that Clifton has waived this issue on appeal and that Apprendi does not apply to the consecutive sentencing statute.
In an earlier opinion which we previously issued in this cause, we affirmed the conviction of both codefendants Clifton and Galloway, but reversed in part as to the sentences imposed. See People v. Clifton, 321 Ill.App.3d 707, 255 Ill.Dec. 769, 750 N.E.2d 686 (2000); (see also the supplemental opinion filed on April 24, 2001). In that opinion, we reversed in part as to the sentencing issues, finding that the consecutive sentences imposed upon codefendants pursuant to section 5-8-4 of the Unified Code of Corrections (730 ILCS 5/5-8-4 (West 1998)) were rendered unconstitutional by our Supreme Court's holding in Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000), where the Court held that "[o]ther than the fact of a prior conviction, any fact that increases the penalty for a crime beyond the prescribed statutory maximum must be submitted to a jury, and proved beyond a reasonable doubt." Apprendi, 530 U.S. at 490, 120 S.Ct. at 2362-63, 147 L.Ed.2d at 455; see also Clifton, 321 Ill.App.3d at 727, 255 Ill.Dec. 769, 750 N.E.2d at 704. We also found that this question challenged the trial court's statutory authority to impose a particular sentence, and therefore, the issue was not waived by defendants' failure to raise it in a timely postsentencing motion. See Clifton, 321 Ill.App.3d at 724-25, 255 Ill.Dec. 769, 750 N.E.2d at 702-03.
After our earlier opinion was issued, codefendant Galloway filed a petition for rehearing urging this court to vacate his sentence on the basis that the extended prison terms for each of the individual offenses for which he was convicted, as well as the requirement that these sentences be served consecutively, were unconstitutional under Apprendi. We agreed, and thus vacated his sentence on the grounds that it was improper under Apprendi as both an extended-term and consecutive sentence. See Clifton, 321 Ill. App.3d at 732-33, 255 Ill.Dec. 769, 750 N.E.2d at 708-09. The cause was thus remanded for resentencing.
Since our original decision in Clifton, our supreme court addressed the issue of whether section 5-8-4 of the Code, which provides for consecutive sentencing, is unconstitutional, and determined in both People v. Wagener, 196 Ill.2d 269, 286, 256 Ill.Dec. 550, 752 N.E.2d 430, 441-42 (2001), and People v. Carney, 196 Ill.2d 518, 527, 256 Ill.Dec. 895, 752 N.E.2d 1137, 1141 (2001), that consecutive sentencing does not offend the constitutional protections set forth in Apprendi. In Wagener, the court articulated the basis of its decision by stating that "[i]t is a settled rule in this state that sentences which run consecutively to each other are not transmuted thereby into a single sentence. [Citations.] Because consecutive sentences remain discrete, a determination that sentences are to be served consecutively cannot run afoul of Apprendi, which only addresses sentences for individual crimes. Accordingly, section 5-8-4(b) of the Code passes constitutional muster." Wagener, 196 Ill.2d at 286, 256 Ill.Dec. 550, 752 N.E.2d at 441-42. Likewise, in Carney, the court stated that "[t]he fact-finding process implicated [in section 5-8-4(b)] *903 does not offend the constitutional protections identified in Apprendi because, in applying the factors, the judge may not impose a sentence that exceeds the prescribed statutory maximum for each offense. [Citation.] Thus, the defendant is not subjected to additional punishment not contemplated by the substantive offense statute or the sentencing statute associated therewith." Carney, 196 Ill.2d at 527, 256 Ill.Dec. 895, 752 N.E.2d at 1142.
After its decisions in Wagener and Carney, the Illinois Supreme Court, in the exercise of its supervisory authority, directed this court to vacate our previous judgment in Clifton and reconsider based on the aforementioned holdings. Following that directive here, we now vacate our earlier judgment as entered in Clifton, 321 Ill.App.3d 707, 255 Ill.Dec. 769, 750 N.E.2d 686, and upon reconsideration, reinstate and incorporate herein by reference the opinion previously entered, except as it pertains to the application of Apprendi to the imposition of consecutive sentences in light of Wagener and Carney. As to those issues, we modify our earlier opinion to conclude that the consecutive sentences originally imposed on codefendant Clifton were proper and thereby vacate our previous decision reversing and remanding the trial court's sentencing judgment. In place of that, we herewith affirm the sentencing judgment as originally entered by the trial court. With respect to codefendant Galloway, we adhere to our prior determination that the extended-term sentences he received for each of the individual offenses of first degree murder and attempted first degree murder be remanded for clarification as discussed therein (see Clifton, 321 Ill.App.3d at 732-33, 255 Ill.Dec. 769, 750 N.E.2d at 708-09 ("[s]ince it is not clear from the record what factors the trial judge used in finding that Galloway was eligible for an extended sentence, such a determination should be more appropriately made on remand. [Citation.] If the extended sentence was imposed based on Galloway's prior convictions, then it may stand, as the fact of prior convictions need not be found by a jury and proved beyond a reasonable doubt under Apprendi")). But in either event, we withdraw and vacate our determination that the sentences imposed upon him could not be served consecutively. Accordingly, based upon these modifications, we vacate our earlier judgment in which the judgment of the trial court was affirmed in part, reversed in part and remanded, and substitute in its place our judgment affirming the convictions and sentences as to codefendant Clifton, and affirming in part and remanding in part as to codefendant Galloway.

CONCLUSION
For the foregoing reasons, the judgment of the circuit court is affirmed in part and remanded in part.
Affirmed and remanded.
GORDON, P.J., with McNULTY and McBRIDE, JJ., concurring.
NOTES
[1]  Due to the page limitations imposed under revised Supreme Court Rule 23 (166 Ill.2d R. 23), we are compelled to delete from the published portion of this opinion our findings that the trial court did not abuse its discretion when it held that there was no discovery violation and our finding that the failure of Clifton's counsel to move for dismissal for lack of a speedy trial did not deny him effective assistance of counsel. We must also delete from our discussion our rejection of Clifton's argument that the evidence was insufficient to establish Clifton's guilt either as a principal or on an accountability theory. Our discussion of these issues is included in the full, unabridged text of this opinion which is on file with the clerk of this court under docket nos. 1-98-2126, 1-98-2384 (consolidated).
[2]  Defendant Galloway did not participate in the supplemental appeal.
