EXCELSIOR SPRINGS – A full-bodied moonshiner huffs and puffs into the corn liquor jug resting on the crook of his right arm to create a throaty, wolfing sound. A sallow-eyed man, coal dust under his nails, rakes calloused fingers over a zincridged washboard. Between them stands a wiry, hardscrabble, Rip Van Winkle-style character with a belly-length gray beard and blue jean coveralls. He strums taut strings over the face of a cigar box, making them vibrate with grit and sass. Together, they create music as sweet as black cherry wine on a moon-bright autumn night. The Blue Mountains music image fits a trio centered by a man playing a cigar box guitar – an instrument representing musical Americana, musical history and musical now in any setting. The instrument’s appeal reaches a broader audience than one tucked away in America’s Appalachian backwoods. “These things were used more than just in your usual hillbilly setup,” Shane Speal said. “It encompasses blues, it encompasses…