John Mayer says his "dreams have come true twice."

He told Billboard.com: "I thought I'd just take a pill and it would go away, but the problem got worse and worse and grew and grew.

"I probably had contiguously three, maybe four months of not saying a word. The endurance was tough for me, but I started a new life."

Doctors initially tried to treat the problem by injecting his vocal cords with a huge amount of Botox, which left them paralysed and him unable to speak for weeks.

He said: "I was forced to type on my iPad to communicate anything. It wasn't liberating. Is breaking your leg liberating? No. All complexity is gone when you don't have a choice.

"I spent so long being terrorised, I had all but shut down the fantasy of playing music again-just so I could, you know, survive."

But John was relieved when the condition slowly started to improve when he took some time off and meant he didn't need to undergo surgery.

He said: "It's hard to believe that I'm healed, but just to make sure, I keep going back every two weeks for a look, and it's the same - if not better.

"The greatest gift I now have in my life is the opportunity to play again, which is also the opportunity to dream again. My dreams were in escrow, but when I found out these things in my throat had receded, the most exciting thing for me was having a second chance at a new life. My dreams have come true twice. That's really cool."