Founded by an English trio of former jazz musicians frustrated with what they perceived as the genre's limitations, AMM is one of the most enduring free improvisational groups in recorded music history. They came together as a musical unit based on negative desire: to create something from nothing. Since the middle of the 1960s, in various groupings, they have pursued a musical direction focused on a core aesthetic of genuine inquiry. As a collective (only drummer/percussionist Eddie Prévost has been constant), they make no attempt to create spontaneous music that reflects or ...