Dizzy Gillespie on traditional Afro-Cuban rhythms. Gillespie was introduced to Chano Pozo in 1947 by Mario Bauza, a Latin jazz trumpet player. Chano Pozo became Gillespie's conga drummer for his band. Gillespie also worked with Mario Bauza in New York jazz clubs on 52nd Street and several famous dance clubs such as the Palladium and the Apollo Theater in Harlem. They played together in the Chick Webb band and Cab Calloway's band, where Gillespie and Bauza became lifelong friends. Gillespie helped develop and mature the Afro-Cuban jazz style. Afro-Cuban jazz was considered bebop-oriented, and some musicians classified it as a modern style.
Dizzy Gillespie a session led by Coleman Hawkins with Gillespie as a featured sideman on February 16, 1944 (Apollo), the first formal recording of bebop. He appeared in recordings by the Billy Eckstine band and started recording prolifically as a leader and sideman in early 1945. He was not content to let bebop sit in a niche of small groups in small clubs. A concert by one of his small groups in New York's Town Hall on June 22, 1945 presented bebop to a broad audience; recordings of it were released in 2005. He started to organize big bands in late 1945.