1940s in jazz figures as baritone saxophonist Lars Gullin and pianist Bengt Hallberg. The theoretical underpinnings of cool jazz were set out by the blind Chicago pianist Lennie Tristano, and its influence stretches into such later developments as Bossa nova, modal jazz, and even free jazz. See also the list of cool jazz and West Coast musicians for further detail. The American Federation of Musicians recording ban, called by James Petrillo, continued through 1943. 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
Miles Davis tried to persuade him to join the Tiny Bradshaw band, which was passing through town, but his mother insisted he finish high school before going on tour. He said later, "I didn't talk to her for two weeks. And I didn't go with the band either." In January 1944, Davis finished high school and graduated in absentia in June. During the next month, his girlfriend gave birth to a daughter, Cheryl. In July 1944, Billy Eckstine visited St. Louis with a band that included Art Blakey, Dizzy Gillespie, and Charlie Parker. Trumpeter Buddy Anderson was too sick to perform, so