John Mayer Late Addition to Southern Grounds Music Festival

John Mayer’s not able to sing right now following vocal cord surgery at the end of last month, but that’s not stopping him from appearing at Zac Brown’s Southern Ground Festival this weekend in Nashville.

And if you’re worried about the singer-songwriter doing permanent damage to his voice, don’t be – he’ll only be playing guitar at the festival, which takes place September 21 and 22. Mayer is scheduled to appear both nights.

Mayer already canceled his U.S. tour earlier this year because of a vocal cord injury, and he underwent a second surgery to remove a granuloma on his vocal cords late last month. After that surgery, he wrote on his Tumblr page that he will be “silent for the next few months, no singing for probably six.”

Fortunately, the Southern Ground festival will have no shortage of great singers for Mayer to perform with. Performers at the Nashville version of the festival include Alan Jackson, Dwight Yoakam, David Gray, Sheryl Crow, Amos Lee and Blackberry Smoke. A second incarnation of Southern Ground will be held in Charleston, S.C. October 20 and 21 of this year.

In addition to the music, both versions of the Southern Ground festival will feature a wide variety of food and drink vendors for festivalgoers.

Mayer is longtime friends with Clay Cook, multi-instrumentalist in the Zac Brown Band. Clay co-wrote many of the biggest hits on Mayer’s debut Room For Squares, including “No Such Thing,” “Why Georgia” and “Neon.”

In other Mayer news, he also appeared on this weekend’s season premiere of “Saturday Night Live” on September 15. He accompanied singer Frank Ocean, playing guitar on two songs: “Thinking About You” and “Pyramids.” Both songs appear on Ocean’s recently released album, Channel Orange. The week’s show was hosted by “Family Guy” creator Seth MacFarlane.