Al Green will team with the Dave Matthews Band for a duet at a June 30 performance at Chicago's Soldier Field that will appear in the IMAX film "All Access." Other acts who have taped performances for the film are Sting with Cheb Mami, Kid Rock, Macy Gray, Moby, George Clinton and the P-Funk All Stars with Mary J. Blige, Phish's Trey Anastasio with B.B. King, the Roots and Carlos Santana with Rob Thomas. Producers hope to premiere "All Access" on IMAX's 250 giant screens worldwide around the time of next year's Grammys. ...

Former Jodeci singer Dalvin DeGrate has been dropped by Maverick Records, according to a publicist at the label. DeGrate released his solo debut, Met.A.Mor.Phic., on April 18, and he had released one single, "Why Can't We," when the move was made. No reason was given by Maverick at press time. ...

Soul singer Erykah Badu is planning a Sept. 19 release for her new album, tentatively titled The New Du, according to a publicist from Kedar Entertainment. Badu has recorded for the Roots and OutKast since her 1997 debut, Baduizm. ...

A three-CD box set from late singer Johnnie Taylor, Lifetime, is due late this year, according to an announcement from Fantasy, Inc. The label, which recently issued the latest album from vocal harmonizers the Dells, released Can You Feel Me?, the debut album from 22-year-old singer Enchanette on Tuesday (June 20).

Janet Jackson and her production mainstays, Jimmy Jam and Terry Lewis, plan to wrap up work on the pop star's follow-up to 1997's The Velvet Rope before the end of the year. The team has recorded four songs for the LP with hip-hop producer Rockwilder, including the ballad "Feels So Right" and "Who." "We kept joking that ['Who'] reminds us of an old Eddie Kendricks kind of record, like a 'Keep on Truckin' ' kind of record," Jimmy Jam said, referring to the late soul singer. ...

Singers Chico DeBarge and Monifah will appear on the soundtrack to "The Original Kings of Comedy," tentatively set for August release, according to Universal Records. Rappers Big Tymers and Nelly also are slotted for the album. ...

Bob Rolontz, a reporter, editor, producer and record executive who designated the platinum album to signify the sale of 1 million records — for the 1968 Cream album Wheels of Fire — died Wednesday at age 79 of complications from Parkinson's disease. Rolontz, who produced Mickey and Sylvia's 1957 hit "Love Is Strange," was vice president of publicity and advertising at Atlantic Records in the late 1960s, where he worked with the Rolling Stones, Aretha Franklin and Yes. He also wrote and edited for Billboard magazine. ...

Chaka Khan, Boyz II Men, Smokey Robinson and Eric Benét will perform at the 50th anniversary celebration of KPRS-FM (Hot 103), the oldest African–American-owned-and-operated radio station in the United States. The party will be held July 22 at Bartle Hall/Kansas City Convention Center, in Kansas City, Mo., according to a station spokesperson. ...

R&B crooner D'Angelo and rapper Dr. Dre are teaming for a remix of the former's "Chicken Grease," according to MTV News Online. D'Angelo said he's also working on a remix of his "Devil's Pie," which should be released soon. ...

Grammy-nominated gospel singer the Rev. James Moore died June 7 in Memphis, Tenn., at age 44. His most recent album, Family and Friends, was released in April. ...

Prince has posted 18 song clips in RealAudio format in The Vault section of his Web site (www.npgonlineltd.com). Clips include a four-minute live clip of "I Could Never Take the Place of Your Man," as well as snippets of the studio recordings "Cybersingle" and "Splash." ...

The four-CD Doo Wop Box III, featuring tracks by the Dominoes, Drifters and Spaniels, will be released Aug. 1. The tracks on the set were chosen by artists who grew up listening to doo-wop, including Robert Plant and Keith Richards. ...

Wednesday's birthdays (June 21): O.C. Smith, 68; Mitty Collier, 59; Deodato, 58; Brenda Holloway, 54; and Carl White (Rivingtons), 1932–1980.

— sonicnet.com staff report