Paul Simon is putting his health first. The 83-year-old singer-songwriter and former member of Grammy-winning folk duo Simon & Garfunkel announced the cancellation of two concerts in Philadelphia over the weekend due to a physical ailment.

Bad news for Paul Simon fans. In a post shared to Simon’s Instagram account on Saturday, it was announced that Simon canceled his Saturday and Sunday performances at the Philadelphia Academy of Music due to an ongoing issue with his back.

Music legend Paul Simon was forced to cancel two concerts at the last minute this weekend due to “chronic and intense back pain.” The “You Can Call Me Al” singer, 83, was scheduled to perform at the Academy of Music in Philadelphia on Saturday, June 28, and Sunday, June 29.