Category:Aleatory compositions

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Aleatoric (or aleatory) music or composition, is music where some element of the composition is left to chance. The term was devised by the French composer Pierre Boulez to describe works where the performer was given certain liberties with regard to the order and repetition of parts of a musical work. The term was intended by Boulez to distinguish his work from works composed through the application of chance operations by John Cage.

For more information, see Aleatoric music.