(20th Century 4)
In chance music, the composer leaves a lot up to the performer. For example
a composer might give each player in the band four different sheets of
music. On the director's signal each player in the band could play any
one of the four sheets of music, starting and stopping whenever he or she
wished. Chance music is interesting because each performance is different.
One important composer of
chance music was John Cage. His Imaginary Landscape No.4, consists
of 12 radios all playing at the same time, but all tuned to different stations.
4'33" (arranged for oboe and piano duet) by John Cage