Lyrics | Emmylou Harris, Alison Krauss, John Starling, Rodney Crowell, Chris Hillman, Kris Kristofferson, Shawn Colvin, Steve Earle, Lucinda Williams, Mary Chapin Carpenter, Vince Gill, Patty Griffin, Daniel Lanois, Buddy Miller, Herb Pedersen, Mavis Staples, Sara Watkins, Iron & Wine, Conor Oberst, Holly Williams, Trampled by Turtles, The Milk Carton Kids, Shovels & Rope and Chris Coleman