John Birks "Dizzy" Gillespie (/ɡɪˈlɛspi/; October 21, 1917 – January 6, 1993) was an American jazz trumpeter, bandleader, composer, and singer.

Gillespie was a trumpet virtuoso and improviser, building on the virtuoso style of Roy Eldridge[2] but adding layers of harmonic and rhythmic complexity previously unheard in jazz. His combination of musicianship, showmanship, and wit made him a leading popularizer of the new music called bebop. His beret and horn-rimmed spectacles, his scat singing, his bent horn, pouched cheeks and his light-hearted personality provided some of bebop's most prominent symbols.