Old Crow Medicine Show revitalized old-timey string bands for the 21st century, playing hillbilly tunes, bluegrass, blues, and folk with a rock & roll verve. Old Crow's spirited revivals helped shape the Americana movement of the 2000s in sound and spirit, ushering the past into the present with their enthusiastic rambles and hollers. "Wagon Wheel," the band's signature song, existed at this chronological crossroads: chief Crow Ketch Secor -- the only bandmember who has remained throughout the group's many incarnations since its inception in 1998 -- built the tune around a cho...