Kenny Chesney hosted quite the surprise party in Panama City, Fla. this week. He packed three thousand people into a beach bar for an impromptu concert -- announced with planes flying banners over the beach that morning.

"Obviously, playing football stadiums, I can't say I've never seen a crowd this big," said Chesney after the show. "But I feel pretty comfortable saying that I've never seen so many people packed together quite so tightly . . . or having quite so much fun!"

The surprise show was part of the country star's 'Keg in the Closet' Tour. Chesney and his band played for four straight hours, even playing some songs twice.

"It was the best show we've ever done. Ever. Anywhere. Unbelievable," he said. "The band's exhausted. My voice is gone. And I couldn't have had a better night!"