For 10 points, identify this American avant-garde composer of 4'33".
This composer's early works often employed what he would later call the "gamut technique," in which he limited himself to a predetermined collection of fixed sonorities, such as in the String Quartet in Four Parts. He wrote a set of twenty pieces that depicted the eight "permanent emotions" of the aesthetic of rasa. When describing the experience that inspired his most famous composition, he wrote that he heard a high sound and a low sound: his nervous system and the circulation of his blood. That experience was a visit to an anechoic chamber at Harvard University, which convinced this composer of the Sonatas and Interludes for prepared piano of the impossibility of silence. For 10 points, identify this American avant-garde composer of 4'33".
This composer's early works often employed what he would later call the "gamut technique," in which he limited himself to a predetermined collection of fixed sonorities, such as in the String Quartet in Four Parts.
John Cage