Pianist von Schlippenbach and drummer Eddie Prevost on an album of two solo works each, and then together for a piece inspired by Thelonius Monk.

AMM percussionist Eddie Prevost on roto toms with alto saxophonist Seymour Wright in a 5 part series of G.A.M.U.T. free improvisations and interactions.

Perhaps the most iconic and "classic" of AMM albums, recorded at The Crypt in London in 1968 with AMM as the quartet of Cornelius Cardew on piano & cello, Lou Gare on saxophone and violin, Christopher Hobbs on percussion, Eddie Prevost on percussion, and Keith Rowe on guitar & electronics.