"Bebop" is a composition by Dizzy Gillespie, written in 1944, that holds a singular place in jazz history as the title track of an entirely new musical movement. The tune was first recorded on February 16, 1944, during a session led by tenor saxophonist Coleman Hawkins for the Apollo label, with Gillespie as a featured sideman. This recording is widely regarded as the first formal documentation of bebop on record, capturing the radical harmonic and rhythmic departures that Gillespie and Charlie Parker were pioneering as an alternative to the prevailing swing style. The composition embodies the dissonant harmonies and polyrhythmic complexity that would come to define the genre, serving as a declaration of a new musical language. Gillespie would go on to compose many other bebop landmarks, including "Groovin' High," "Salt Peanuts," "Woody 'n' You," and "A Night in Tunisia," but "Bebop" itself stands as the opening salvo. Gillespie often spoke of his partnership with Parker in world-historical terms, stating that their music would become "the classical music of the future." Charlie Parker recorded the tune for Dial Records in 1946 with his quintet featuring Howard McGhee on trumpet and Jimmy Bunn on piano, further cementing the composition's association with the architects of the bebop revolution.