Album: Attica/Coming Together/Les moutons de Panurge (1974).
Frederic Anthony Rzewski (born April 13, 1938 in Westfield, Massachusetts) is an American composer and virtuoso pianist
Coming Together http://m.youtube.com/watch?v=RSuuwJFw4wU&fulldescription=1
Les moutons de Panurge http://m.youtube.com/watch?v=FMog4QMadOg&fulldescription=1