New Orleans Jazz is a style of jazz music that originated in the city of New Orleans, Louisiana. It is characterized by a collective improvisation style, polyphonic ensemble playing, and a syncopated rhythm. DIXIELAND is a subgenre of New Orleans Jazz that emerged in the early 20th century. It is known for its upbeat tempo and use of collective improvisation. DIXIELAND is often considered the first form of jazz to be widely accepted by mainstream audiences.