By EW Staff
Updated July 07, 2009 at 04:00 AM EDT

Starring: James Brown, B.B. King
Directed by: Jeffrey Levy-Hinte
Release date: July 10

Three weeks prior to the Rumble in the Jungle, the legendary 1974 boxing match in Zaire in which Muhammad Ali defeated George Foreman, the country hosted a concert. Actually, it was more of an extravaganza, featuring such R&B luminaries as James Brown, B.B. King, and Bill Withers — who teamed up with a myriad of Southern African musicians for three days of performances. Levy-Hinte, an editor of the 1996 Oscar-winning Ali doc When We Were Kings, combed through 125 hours of surviving footage from the event and whittled it down into a definitive concert film. ”It gives you the opportunity to put on platform shoes and bell-bottoms and jump right into one of the coolest events of the ’70s,” says Levy-Hinte. Groovy.