The Late Show with David Letterman 2015-04-15: Michael J. Fox, Amy Sedaris, Iron & Wine, Ben Bridwell
The Late Show with David Letterman 2015-05-01: Steve Martin, Emmylou Harris, Rodney Crowell, Amos Lee, Ralph Stanley, Mark O'Connor
The Late Show with David Letterman 2015-05-04: President Barack Obama, Will Ferrell, the Avett Brothers, Brandi Carlile
