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).