John Mayer Joins Zac Brown Band Music Festival

John Mayer leaves through the back door of the Troubadour on Friday evening (September 28) in West Hollywood, Calif.

The 34-year-old singer was recently added to the lineup of the Zac Brown Band‘s Southern Ground Music & Food Festival, which takes place in late October in Charleston, North Carolina.

PHOTOS: Check out the latest pics of John Mayer

The weekend will also feature performances by The Avett Brothers, Grace Potter and the Nocturnals, and the Los Lonely Boys.

10+ pictures inside of John Mayer leaving the Troubadour…