The 61-year-old fell while dancing to entertain the crowd, after the sound system failed at the Sturgis Motorcycle Rally in South Dakota.

Tyler was on a catwalk when he fell backward onto a couple of fans, said Mike Sanborn of the Buffalo Chip Campground, which hosted the event.

The singer was in "good spirits" as he left the grounds, Sanborn said.

"He was good natured about it," he told the Associated Press news agency. "He was talking and joking with the physician."

The singer suffered neck and shoulder injuries, Sanborn added, but it was not immediately clear how serious they were.