This book explores the life and works of the pioneering opera composer Robert Ashley, one of the leading American composers of the post-Cage generation. Ashley's innovations began in the 1960s when he, along with Alvin Lucier, Gordon Mumma, and David Behrman, formed the Sonic Arts Union, a group that turned conceptualism toward electronics. He was also instrumental in the influential ONCE Group, a theatrical ensemble that toured extensively in the...