According to
The New Penguin Dictionary of Music, John Cage was an American composer (also pianist and writer), pupil of Schönberg. Has written for instruments and his invention, the prepared piano; especially noted for "music" which seems to involve abdication of the composer, e.g. his
Imaginary Landscape for 12 radio sets, first performed in 1951, requiring 24 performers (2 to each set) and conductor. Other works include
Renga with Apartment House 1776 for large orchestra (for US bicentenary, 1976).