WAYNE HANCOCK is a bona fide traveling troubadour, spending more time on the road than in any one place. His music captures the essence of his vagabond lifestyle, steeped in the heritage of Hank Williams, Woody Guthrie, and Bob Wills. CAROLINE & THE RAMBLERS are one of the cornerstones of Atlanta's redneck underground, celebrating the role of great women singers in music with pure aplomb and sheer talent. They both play the Earl Wed., MARCH 19. $12. 9 p.m. 488 Flat Shoals Raod. 404-522-3950. www.badearl.com.