Dizzy Gillespie Dizzy Gillespie and his Rebop Six, which included Parker, started an extended gig at Billy Berg's club in Los Angeles in December 1945. Reception was mixed and the band broke up. In February 1946 he signed a contract with Bluebird, gaining the distribution power of RCA for his music. He and his big band headlined the 1946 film "Jivin' in Be-Bop". After his work with Parker, Gillespie led other small combos (including ones with Milt Jackson, John Coltrane, Lalo Schifrin, Ray Brown, Kenny Clarke, James Moody, J.J. Johnson, and Yusef Lateef) and put together his successful big bands starting in
Tritone substitution Tritone substitution The tritone substitution is one of the most common chord substitutions found in jazz and was the precursor to more complex substitution patterns like Coltrane changes. Tritone substitutions are sometimes used in improvisation—often to create tension during a solo. Though examples of the tritone substitution, known in the classical world as an augmented sixth chord, can be found extensively in classical music since the Renaissance period, they were not heard until much later in jazz by musicians such as Dizzy Gillespie and Charlie Parker in the 1940s, as well as Duke Ellington, Art Tatum, Coleman Hawkins, Roy Eldridge