African-American music Ruth persuaded a gospel group to sing in a secular setting, the Apollo Theater, with such success that he subsequently arranged gospel caravans that traveled around the country, playing the same venues that rhythm and blues singers had popularized. Meanwhile, jazz performers began to push jazz away from swing, a danceable popular music towards more intricate arrangements, improvisation, and technically challenging forms, culminating in the bebop of Charlie Parker and Dizzy Gillespie, the cool sounds and modal jazz of Miles Davis, and the free jazz of Ornette Coleman and John Coltrane. African-American musicians in the 1940s and 1950s were developing
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