Photo by Jason Woodill

It's been nearly two years (20 months) since John Mayer last performed live publicly, but at a benefit show for firefighters in Montana on Wednesday, the multi-talented musician took the stage and sang for the first time since a very public battle granulomas on his vocal cords and two surgeries. Mayer had to scrap his entire tour last because of surgery, but he announced before performing that he has made significant progress.

Performing "If I Ever Get Around to Living" off his latest album, Born and Raised, and later joining the Zac Brown Band and others onstage for a jam on the Band's "Up on Cripple Creek," the singer revealed that although the granulomas have healed, he required Botox injections as part of the recovery. The injections typically take 6-9 months to wear off, and they've left Mayer unable to sing high notes in the meantime. "It lets up very slowly," he said. "Every couple of weeks, there’s another note."

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