This year's New Orleans Jazz and Heritage Festival will be headlined by 'She Will Be Loved' hitmakers Maroon 5 and 'Little Lies' singers Fleetwood Mac. 

The world-famous event is set to be held in the Louisiana city in April and May and other acts confirmed to appear include Frank Ocean, Billy Joel, and Dave Matthews Band.

The Black Keys, B.B. King and Hall & Oates are also set to perform, as is crooner John Mayer, who played his first gig in nearly a year in Montana last night (January 16).

Mayer performed a concert yesterday at the Emerson Theatre in Bozeman, MT and previously told fans that he is recovering from not being able to sing slowly: "I don't have a ton of range…I'm a 70-year-old version of myself. It's better than nothing…it's like a painter w/just reds & purples. Full recovery will be 'months.'"

Watch Mayer's live comeback here: