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
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