As first tipped by our friends at Hidden Track, Mike Gordon and Warren Haynes are among the musicians featured on Bernie Worrells new instrumentals album _ Improvisczario_. Gordon plays banjo on the albums second track Up in The Hills, while Haynes appears on both Dirty and Killer Mosquito. Living Colour drummer Will Calhoun and bassist Brett Bass round out the project. The disc will be released on September 11, the same day Worrell is scheduled to issue an additional record, Baby Elephant, with Prince Paul and Newkirk and the documentary film Stranger: Bernie Worrell on Earth, which features interviews with George Clinton, David Byrne and Mos Def.