The first jazz was played in the early 20th century. The work chants and folk music of black Americans are among the sources of jazz, which reflects the rhythms and expressions of West African song. Ragtime, an Afro-American music that first appeared in the 1890s, was composed for the piano, and each rag is a composition with several themes. The leading ragtime composer was Scott Joplin. The first improvising jazz musician was the cornetist Buddy Bolden, leader of a band in New Orleans. The first jazz bands were usually made up of one or two ....