John cage is known as the father of what kind of music?

The answer is that John Cage is known as the father of chance music. Chance music or also known as ALEATORIC Music. It started around the 1950’s. Some primary element of a composed work's realization is left to the determination of its performer It is music in which some element of the composition is left to chance, and/or. 

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answer; /// i do believe the correct answer is (steala);