Carla Bley, née Borg, (born May 11, 1936) is an American jazz composer, pianist, organist and band leader. An important figure in the Free Jazz movement of the 1960s, she is perhaps best known for her jazz opera Escalator Over The Hill (released as a triple LP set), as well as a book of compositions that have been performed by many other artists, including Gary Burton, Jimmy Giuffre, George Russell, Art Farmer and her ex-husband Paul Bley.

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