Norman Blake John Hartford Del Mccoury Jerry Reed Richard & Mimi Farina Flatt And Scruggs Doc Watson Josh Graves Eric Von Schmidt Blue Highway Union Station Tony Rice Maxwell Hughes Lonesome River Band Steep Canyon Rangers Jimmy Bowen Infamous Stringdusters Gabby Pahinui Laurie Lewis & The Right Hands Molly Tuttle Doug Dillard Allison Krauss And Union Station Geoff Muldaur Foghorn Stringband Ricky Skaggs Marshall Crenshaw Dailey & Vincent Billy Strings Mark O'Connor Bothy Band Sam Bush Lou Barlow Carolina Chocolate Drops The Mopeds Lost On Purpose Madilyn Bailey J. J. Cale Asylum Street Spankers Iris Dement Eggstone Nitty Gritty Dirt Band Pete Seeger Gentle Mystics Birdie Ralph Stanley The Seldom Scene John Prine God Help The Girl Emmylou Harris