found: Grove music online, Sept. 9, 2005(Third stream: ...a type of music which, through improvisation or written composition or both, synthesizes the essential characteristics and techniques of contemporary Western art music and other musical traditions...The term was originally applied to a style in which attempts were made to fuse basic elements of jazz and Western art music--the two mainstreams joining to form a 'third stream'...Since the late 1950s the application of the term has broadened, notably through the work of pianist Ran Blake, to encompass fusions of classical music with elements drawn not only from African-American sources but also from other vernacular traditions, including Turkish, Greek Hindustani, Russian and Cuban music among others)