Sarah Jarosz I'M With Her Sara Watkins Aoife O'Donovan Iron Horse Darrell Scott Yo-Yo Ma, Stuart Duncan, Edgar Meyer & Chris Thile Von Thord Noam Pikelny Clarence White Edgar Meyer Crooked Still The Vespers Cahalen Morrison And Eli West Gillian Welch And David Rawlings The Lil Smokies Nashville Symphony The Secret Sisters Chris Avetta Tim Myers Sierra Hull Alison Krauss And Union Statio Karen Matheson Honeysuckle Andrew Peterson Trampled By Turtles Roseanne Cash Michael Daves My Bubba Dustbowl Revival Chieftains Jerry Garcia & David Grisman Marika Hackman Concha Buika Bachue Sarah Borges Tracy Grammer Lindsay White Violeta Parra Matt Munisteri Bronwynne Brent Gillian Welch Adam Steffey Bap Kennedy Shoshana Bean The Lowest Pair Sara K Willie Watson Mamuse