John Mayer undergoes emergency appendectomy

The singer was admitted to the hospital on Tuesday morning.

Dead & Company, which is comprised of Grateful Dead members Mickey Hart, Bill Kreutzmann and Bob Weir, Mayer, Oteil Burbridge, and Jeff Chimenti, announced that as a result of the surgery, their concert in New Orleans has been canceled.

Their final two shows this year are set for Thursday and Friday in Orlando and Sunrise, Florida, respectively.

Mayer, 40, has not yet commented on the procedure, but as of Monday evening, he'd been active on social media.