How Has John Cage Changed Over Time Period

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Many composers have used chance operations in their compositional processes: Charles Ives,
Henry Cowell, Morton Feldman, Pierre Boulez etc., but John Cage became the principal figure and the most influential composer to whom chance became a standard tool for composition: he used it in practically every work composed after 1951. Although Cage had used chance operations on a few earlier occasions, the first pieces fully written in this new approach were: “Imaginary
Landscape No. 4” for 12 radio receivers and “Music of Changes” for piano, written in 1951. Earlier that year, Cage was presented with a copy of the I Ching- a Chinese classic text which describes a symbol system used to identify order in chance events. The process of composition involved