Composer, performer, instrument builder, teacher, and writer Gordon Mumma has left an indelible mark on the American contemporary music scene. A prolific composer and innovative French horn player, Mumma is recognized for integrating advanced electronic processes into musical structures, an approach he has termed "Cybersonics." Musicologist Michelle Fillion curates a collection of Mumma's writings, presenting revised versions of his classic pieces as well as many unpublished works from every stage of his storied career. Here, through words and astonishing photos, is Mumma's chronicle of seminal events in the musical world of the twentieth century: his cofounding the Cooperative Studio for Electronic Music; his role in organizing the historic ONCE Festivals of Contemporary Music; performances with the Sonic Arts Union; and working alongside John Cage and David Tudor as a composer-musician with the Merce Cunningham Dance Company. In addition, Mumma describes his collaborations with composers, performers, dancers, and visual artists ranging from Robert Ashley and Pauline Oliveros to Marcel Duchamp and Robert Rauschenberg. Candid and insightful, Cybersonic Arts is the eye-opening account of a broad artistic community by an active participant and observer.