Roscoe Mitchell/John Edwards/Tony Marsh

Pioneering free improv sax legend Mitchell is best known as an original member of the Art Ensemble of Chicago and a founding member of Chicago's AACM (Association for the Advancement of Creative Musicians). Making an extremely rare UK visit he's joined here by two leading lights of the London improv scene – powerful bassist Edwards and drummer Marsh – for some more of his still-potent improvised flights. First of two nights.