Mountain music revivalists Old Crow Medicine Show spin traditional folk and bluegrass yarns with a rock & roll attitude. Critter Fuqua (vocals/banjo/resonator guitar), Kevin Hayes (guitjo), Morgan Jahnig (upright bass), Ketch Secor (vocals/fiddle/harmonica/banjo), and Willie Watson (vocals/guitar/banjo) may specialize in rags, hollers, and pre-World War II blues, but they were weaned on Nirvana and Public Enemy.