"Billy Joel's upcoming concert dates will be rescheduled due to a medical condition," the statement began. "The current tour will be postponed for four months to allow him to recover from recent surgery and to undergo physical therapy under the supervision of his doctors."

Billy Joel is postponing his shows over the next four months so he can recover from surgery. New dates have been announced for most of the concerts.

Billy Joel is rescheduling eight shows on his upcoming tour, including dates with Sting and Stevie Nicks. "While I regret postponing any shows, my health must come first," said the "Uptown Girl" singer in a statement.