Nitty Gritty Dirt Band: Saturday, April 27, Sheraton New Orleans Fais Do-Do Stage, 5:45p

When you’ve been a band for 58 years and played a key role in country-rock history, you’re entitled to a long goodbye. So it is that the Nitty Gritty Dirt Band is playing Jazz Fest toward the start of its farewell tour, but they don’t intend to wrap it up right away.

“We don’t want to be limping to the finish line here,” says frontman Jeff Hanna, who is one of two founding members (...