Recorded live at the Troubadour club in Los Angeles in 1970, this criminally overlooked double LP presents aficionados of authentic jazz-rock with a mind-blowing proposition: a session featuring musicians who played on both Miles Davis’ Bitches Brew (Airto Moreira) and Frank Zappa's The Grand Wazoo (George Duke, Ernie Watts), produced by the much sampled David Axelrod, and all shot-through with Cannonball Adderley's effortless soul-jazz bounce. Amazingly, the music is as good as that description suggests. The title track, for instance, is a 16-minute stormer containing a supremely heavy break-down in which Roy McCurdy's drums provide a pounding framework for George Duke's filthy Fender Rhodes and the trippiest analogue synth whooshes this side of Dr Patrick Gleeson's laboratory. To cap it all off, the tunes are bookended with Adderley's preposterously hip and urbane spoken monologues and meditations — making this just about as much fun as you can have while wearing headphones.

Vinyl selling for £19.90 at ebay.com