NPR Music

The history of folk and pop music is littered with gorgeous intertwined voices: Paul Simon and Art Garfunkel, Gillian Welch and David Rawlings, The Jayhawks' Mark Olson and

Singer-songwriter and roots musician extraordinaire Tim O'Brien closed the second of two Mountain Stage road shows in Grand Marais, Minn., on the shore of Lake Superior. A favorite of Mountain Stage audiences, crew members, listeners and fellow guest artists for 29 years, O'Brien has long held the record for appearing on the show more than any other performer. A multi-instrumentalist of the highest order, O'Brien sits in with nearly every guest on this episode.