TAMPA, Fla. - Blues Traveler frontman John Popper stopped by the Ron Paul rally Sunday for a quick jam session with Ron Noyes, a musician and Ron Paul delegate from New Hampshire.

Popper's appearance got off to a rocky start when he tried calling Rick Santorum fromhis cellphone to see if the former Pennsylvania senator and one-time Republican presidential contender would place his weight behind the Libertarian Texas congressman.

"His voicemail box hasn't been set up, I was going to ask him to endorse our candidate," Popper said, shrugging.

Moving on, Popper, a longtime Libertarian, played his band's hit "Run-Around."

"This song really isn't a political song of all," Popper said. "We like to think it's from Ron, on behalf of us, to the mainstream media."

Popper called the "We Are the Future" rally the most satisfying political event he's ever played.

"I'm so grateful to be here," he said. "And I want to thank you guys for existing."