Little Big Town and Willie Nelson are among the dozens of musicians who will perform at the New Orleans Jazz Fest this year. The seven-day festival begins April 26. Nelson is scheduled to appear on May 3, while Little Big Town is booked for May 4. The lineup also features the Little Willies, the Mavericks and Del McCoury Band with Preservation Hall Jazz Band. Headliners include Billy Joel, Fleetwood Mac, Dave Matthews Band and Maroon 5.