Their first release in 2000 performing Cornelius Cardew's "Treatise", for 20 years the Formanex quartet of sound artists, conceptualists and experimenters Anthony Taillard, Christophe Havard, Emmanuel Leduc, and Julien Ottavi are heard here in collaborations with Keith Rowe, Kasper T. Toeplitz, Ralf Wehowsky, Seth Cluett, Michael Pisaro, Radu Malfatti, &c.

Two concerts of experimental improvisation from two giants of conceptual improvisation and composition, recorded at IKLECTIK in London in 2015 and at Dartmouth College, in Hanover, New Hampshire in 2016; with superb pacing and brilliant execution, these dialogs between keyboard and percussive instruments explore unique sound worlds with depth, inquisitiveness, and a sense of wonder.

A fascinating collaboration from two minimalist/Wandelweiser figures: Christian Wolff on prepared piano, whistles, and stones, and Michael Pisaro-Liu on guitar, harmonica and stones, recording together in Caimbridge, MA for two extended works, "Looking East" and "Looking West".

Christian Wolff initiated his "Microexercises" series when the Miniaturist Ensemble asked for a piece with no more than 100 notes in it; he went on to create 21 more pieces, 13 of which are performed here by the South African duo of Beat Keller & Reza Khota on electric guitar.

Carl Ludwig Hubsch (tuba); Ole Schmidt (bass clarinet); Chris Weinheimer (bass flute); Robert Schleisiek (piano); and Tom Lorenz (vibraphone) interpret Christian Wolff's composition based on "Union Maid", a song from the 1920's, transforming the work through temporal expansion.

Four composers - John Carisi, Eddie Sauter, Christian Wolff, and Stefan Wolpe - create a program of works with a measured balance in the interrelated and contrasting material.

New York School stalwart and John Cage collaborator Christian Wolff met AMM and EA-improvising guitarist Keith Rowe to perform this extended work at erstwhile's AMPLIFY 2011 show in NYC's The Stone.

AMM's performance at the 2009 Freedom of the City Festival with AMM regular members Eddie Prevost and John Tilbury extended with John Butcher, Chritian Wolff and Ute Kanngiesser.