In Lloyd, Kentucky, on U.S. 23, theres a sign on the Country Music Highway dedicated to renowned fiddler Jason Carter. It was placed there because of his other accomplishmentsthe Grammy awards, the worldwide tours, and the many other accolades hes earned through his music. But for Carter, joining the legendary names honored on that stretch of highway just might mean the most. Theres a certain sound thats up there that you just dont hear anywhere else, he says. I think that played a big part in h...