The earliest style of jazz, the music played in New Orleans from about the time that Buddy Bolden formed his first band in 1895 until Storyville was closed in 1917, unfortunately went totally unrecorded. However with the success of the Original Dixieland Jazz Band in 1917 and the many performances documented in the 1920s, it became possible to hear what this music sounded like in later years. Ensemble-oriented with fairly strict roles for each instrument, New Orleans Jazz generally features a trumpet or cornet providing a melodic lead, harmonies from the trombone, countermelodies by the clarinet, and a steady rhythm stated by the rhythm section (which usually consists of piano, banjo or guitar, tuba, or bass and drums). This music is a direct descendant of marching brass bands and, although overlapping with Dixieland, tends to de-emphasize solos in favor of ensembles featuring everyone playing and improvising together. Due to its fairly basic harmonies and the pure joy of the ensembles, it is consistently the happiest and most accessible style of jazz.