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John Mayer

Michael Caulfield/WireImage.com

John Mayer—and his famed pipes—are on the mend.

After announcing in September that he had a granuloma (an inflamed nodule or tumor-like mass of tissue) near his vocal cords, the Gravity singer updated fans on his condition Thursday, saying he had surgery to correct the condition.

"Hey all…I wanted to give you an update on the granuloma just above my vocal cord," Mayer wrote on Tumblr Thursday. "I had surgery this afternoon to remove it and am now on complete vocal rest for a month or more. It's been a very long process in waiting to see if time was an alternative to surgery, but even given two weeks' voice rest (along with many other approaches), there was no change for the better."

"I should be frustrated but I can't seem to stop thinking about beautiful things…I never thought I'd be wishing I could do what I love again; I stay in at night, picking guitar parts off of records and dreaming of playing on the big stage," Mayer went on. "The only difference between now and when I was 18 is that now I have this beautiful, meaningful record waiting for me when I can sing it. Until then, I'm taking off. Going to travel the country, look and listen."

Mayer was forced to cancel appearances with Tony Bennett in Los Angeles and at the iHeartRadio Music Festival in Las Vegas last month, after he was diagnosed with the condition.

We wish him the best with his recovery.