“B” is for…Bluegrass? We’ve got some great new singles coming in, including these three. Saluda’s Aaron Burdett has one about Boone clog dancing legend Arthur Grimes, who’s been a big inspiration to Aaron and many others. Asheville native Bryan Sutton conceived this wild new interpretation of Charlie Daniels’ classic hit, which tells the tale of a guitarist from Deep Gap named Arthel, and how he came to be called Doc… And the Brothers Comatose are a bluegrass/Americana band that formed in 2008 in San Francisco, but now feature a new singer named Addie Levy from southwest Virginia…