This has the best Dixieland Jazz in New Orleans, not to mention the cheapest. If you like good music, then this is the place to go. These guys have been playing jazz for a long time, but they still play it flawlessly. For $5 (although the price might have gone up by now...), you can sit in this room all night and listen to great jazz.
You can request songs for an extra fee, including "When The Saints Go Marching In," but that one costs a special fee to request. The only problem with this place is that the seating is a bit uncomfortable, but it doesn't matter since the music is just amazing.