John Cage (1912-1992) is lauded as one of the most influential and important American composers of the 20th century. He championed non-traditional composition through his use of chance procedures, and propounded innovative uses of musical instruments, including his invention of the prepared piano. Cage is famous for his revolutionary approach to music as both behavior and as artistic practice, and for distinguishing the relationships between and among composers, performers, and listeners. He is perhaps best known for his notoriously tacit composition, 4’33”, consisting of three movements performed without a single note being played, where he bestowed equal importance on both silence and sound.