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
Debut Records Teo Macero, later a producer with Miles Davis, recorded his first album as a leader as a saxophonist for Debut, an album described by critic Dan Morgenstern as an oddball fusion of Lennie Tristano and Anton Webern. Debut was the label on which the "Jazz at Massey Hall" concert album was first issued. Recorded in Toronto, it features Dizzy Gillespie, Charlie Parker, Bud Powell, Charles Mingus, and Max Roach, and was the last recorded meeting of long-term musical partners Parker and Gillespie. In 1957 Danish bookseller Ole Vestegaard leased the company's catalogue from Mingus and produced recordings on the Danish