Trying to define what constitutes music is an abstract concept for many people. For the seminal 20th century composer John Cage, the idea of sound composition and defining noise actually led to an inventive and experimental style involving creating canvases of sound. Known best for his 1952 composition 4'33" (a three movement piece performed without a single note being played) and his creation of the prepared piano (a regular piano with objects threaded between the piano strings), Cage is one of the more avant-garde composers to have ever lived.
