John Mayer, who was scheduled to play at the University of Maine in Orono on April 17, has canceled his tour, according to several online media outlets.

John Mayer has been forced to take an indefinite break from live performance after learning that a granuloma on his vocal cords has grown back after doctors believed it had healed,” reported

Mayer broke the news himself on Tumblr. “This is bad news. Because of this, I have no choice but to take an indefinite break from live performing. Though there will be a day when all of this will be behind me, it will sideline me for a longer period of time than I care to have you count down,” he wrote.

He explained that, “a granuloma forms and continues to snowball because it’s in a spot where the vocal cords hit together and there’s no way to really give it a chance to heal without a good stretch of time and some pretty intensive treatment.”

Tickets for the Orono concert, part of Mayer’s 2012 Spring Tour, hadn’t yet gone on sale. Mayer is reporting that he intends to release his next album, “Born and Raised,” on time.