New Orleans Jazz was known as traditional jazz and early jazz. It consisted of blues and the famous ragtime which led to the development of early jazz that started in the late 19th century. New Orleans Jazz was made up small-band ensembles which later developed into including a cornet (later replaced by trumpet), reed instruments such as clarinet and saxophone, and trombone in the frontline which collectively improvised and created the polyphonic sound. The rhythm section included the drums, banjo, bass, and piano. The music became more and more popular and was more seen as dance music as time passed. Once the popularity and need for musicians grew, many musicians left to Chicago and New York. From there, recordings were done; first by the Original Dixieland Jazz Band where soon Jazz music became a national craze and variations were made of the music creating sub-genres of bebop, cool jazz, and so on. After awhile, the traditional New Orleans Jazz seemed almost forgotten but later revivals kept it alive and the music can still be heard now but musicians of the traditional jazz stopped performing and most New Orleans traditional Jazz can only be heard on CDs, cassette tapes, and other music devices.