The Jazz Composer's Orchestra has been played over 10 times on NTS, first on 22 March 2015. The Jazz Composer's Orchestra's music has been featured on 13 episodes.

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, became…