Kings of Leon Concert Meltdown

The singer appeared to be tired and emotional as they performed at the Gexa Energy Pavillion in Dallas on Friday. After spending some time speaking incoherently, he told the crowd: "I'm going to go backstage and vomit, drink a beer and then come back out and play three more songs."

He added: "For the record, I'm not drunk � I'm just f**king hot." But he didn't return, leaving brother and bassist Jared to announce: "We are so unbelievably sorry. It's beyond out control. It's really not our fault � it's Caleb. He can't play the rest of the show.