The Jazz Composer's Orchestra

Jazz Composer's Orchestra was a jazz group founded in 1965 to further avant-garde jazz in New York, United States. Carla Bley and Michael Mantler were important in its organization and style. Its origins lay in the Jazz Composers Guild, an organization founded by Bill Dixon which grew out of the series of 1964 concerts in New York, known as the "October Revolution in Jazz" and subsequent regular performance settings. A big band, formed by Bley and Mantler