Dixieland was a style of jazz music which developed in New Orleans, USA on Earth in the early 20th century.
While discussing musical tastes with Wendy Roper in 2359, William T. Riker vowed to introduce Roper to real music such as Dixieland or swing. (TNG novel: Imzadi)
A holosuite program used by Benjamin Sisko that featured a baseball game at Ebbets Field had a band who played Dixieland music. (DS9 - Millennium novel: Inferno)