Historic collections from one of the key Improvising/Composer groups (with AMM, Musica Electronica Viva etc) of the '60's. Members were: Mario Beroncini, Waller Branchi, Franco Evangelisti, John Heineman, Roland Kayn, Egisto Macci and Ennio Morricone, joined on some pieces by Frederick Rzewski. All were both composers and instrumental virtuosi; they eschewed all they considered musical cliches (tonality, periodic rhythm, repetition etc) and explored new playing techniques, and 'non-wasteful' economy of compositional means; 'work in small areas'- with broad and often deep aesthetic results. In short, this is history. From Edition RZ, beautifully packaged.