Recorded live on 26 March 1971, at Club B14 in Rotterdam, with Annette Peacock on voice, electric piano and synthesizer, and radical drummer Han Bennink. Improvisie completes the 1971 trilogy of Paul Bley and Annette Peacock's combined experimental synth. works. Together with the reissues of The Bley - Peacock Synthesizer Show release, Revenge: The Bigger The Love, the Greater the Hate, and Annette Peacock & Paul Bley - Dual Unity, Improvisie completes a compelling period for two iconic figures of the free jazz movement, and their pioneering use of moog synthesizers. Presented with expansive liner notes, interviews, and rare archival photos. Professionally re-mastered.