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
John Garcia Gensel named full-time Minister to the Jazz Community; initially Jazz vespers were held at various locations including Central Synagogue. In 1968, jazz ministry had become fully established in Saint Peter's Lutheran Church, on Lexington Avenue in New York City. Jazz musicians including Duke Ellington, Thelonious Monk, John Coltrane, Dizzy Gillespie, Miles Davis, Charles Mingus, Billy Strayhorn attended and played regularly at Jazz vespers. In 1975 Documentary Educational Resources published a portrait of Rev. Gensel which was filmed over the course of 5 years; the documentary records Duke Ellington's last concert and funeral. At Saint Peter's Lutheran Church Rev. Gensel also founded