Dizzy Gillespie Gillespie left Eckstine's band because he wanted to play with a small combo. A "small combo" typically comprised no more than five musicians, playing the trumpet, saxophone, piano, bass and drums. Bebop was known as the first modern jazz style. However, it was unpopular in the beginning and was not viewed as positively as swing music was. Bebop was seen as an outgrowth of swing, not a revolution. Swing introduced a diversity of new musicians in the bebop era like Charlie Parker, Thelonious Monk, Bud Powell, Kenny Clarke, Oscar Pettiford, and Gillespie. Through these musicians, a new vocabulary of musical
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.