Carla Bley, née Borg, is an American jazz composer, pianist, organist and bandleader. An important figure in the free jazz movement of the 1960s, she is perhaps best known for her jazz opera Escalator Over The Hill, as well as a book of compositions that have been performed by many other artists, including Gary Burton, Jimmy Giuffre, George Russell, Art Farmer, John Scofield and her ex-husband Paul Bley.
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