There are several different riverboat tours. The Natchez is the only steam-powered sternwheeler in New Orleans. It has a musical instrument that has been identified with steamboats called a steam calliope, which can produce 32 notes. The steam calliope plays upon departing. The Natchez has live music by the Steamboat Stompers. Two-hour harbor and jazz cruises depart from the Jackson Brewery at the Mississippi river at 11:30am and 2:30pm. At night, you can take a dinner/jazz cruise.
Check out the website for more information at www.steamboatnatchez.com.