1940s in jazz 1940s in jazz In the early 1940s in jazz, bebop emerged, led by Charlie Parker, Dizzy Gillespie, Thelonious Monk and others. It helped to shift jazz from danceable popular music towards a more challenging "musician's music." Differing greatly from swing, early bebop divorced itself from dance music, establishing itself more as an art form but lessening its potential popular and commercial value. Since bebop was meant to be listened to, not danced to, it used faster tempos. Beboppers introduced new forms of chromaticism and dissonance into jazz; the dissonant tritone (or "flatted fifth") interval became the "most important interval of
Charlie Parker with a chicken and the tour bus. In 1942 Parker left McShann's band and played for one year with Earl Hines, whose band included Dizzy Gillespie, who later played with Parker as a duo. This period is virtually undocumented, due to the strike of 1942–1943 by the American Federation of Musicians, during which time few professional recordings were made. Parker joined a group of young musicians, and played in after-hours clubs in Harlem, such as Clark Monroe's Uptown House. These young iconoclasts included Gillespie, pianist Thelonious Monk, guitarist Charlie Christian, and drummer Kenny Clarke. The beboppers' attitude was summed up