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(FILES) This file photo taken on July 30, 2017 shows musician John Mayer performing at the Forum in Inglewood, California. Rock singer-songwriter John Mayer on December 5, 2017 went into emergency surgery for removal of his appendix, forcing his band featuring former members of the Grateful Dead to postpone a show. The 40-year-old Mayer "was admitted into the hospital for an emergency appendectomy" early Tuesday, a representative said in a statement without further detail. / AFP / GETTY IMAGES NORTH AMERICA / Kevin WINTER Image Credit: AFP

A rep for John Mayer says the musician is in “good spirits” after undergoing an emergency appendectomy.

The Grammy-winning singer, songwriter and guitarist underwent surgery on Tuesday. A publicist for the 40-year-old said in a statement on Wednesday that Mayer is recovering and “is in good spirits”.

He had been touring with the Dead & Company.

The group postponed a New Orleans concert date on Tuesday and is now postponing two more dates in Orlando and Sunrise, Florida, this week. Fans can use the tickets for the rescheduled date or get a refund.

It’s not clear when the tour will resume.