George W. Bush rocked out to The Dempseys over the summer, but don't hold that against them. In fact, this three-piece rockabilly band from Memphis has a gaggle of famous fans. Japan's former Prime Minister Junichiro Koizum sparked an international news sensation when he sang an Elvis Presley song with the group, mere months after it was featured in the Johnny Cash biopic Walk the Line. But a little band from Tennessee doesn't receive opportunities like this overnight. The Dempseys have proven themselves through constant touring and a notoriously high-energy stage show. While most other swing-style rockabilly troupes are content to stand and croon to the ladies in polka-dot dresses, the Dempseys are all up in your face, rocking you like a punk band.