Marcus Marcus and Ted Dwane of Mumford & Sons interviewing in their tour bus at Telluride Bluegrass Festival 2011 with The Porchlight Sessions.

About the documentary:

The Porchlight Sessions is a finger pickin’ and foot stompin’ adventure through the evolution of the hillbilly sound. Told through the collective voice of the originators of style to contemporary mainstream acts and campground pickers, the film marks the first time the community has come together to tell the bluegrass story.

Check out the trailer here.