This tribute to singer and songwriter Willie Nelson, 2015 recipient of the Library of Congress Gershwin Prize for Popular Song features performances by Nelson, as well as Edie Brickell, Leon Bridges, Rosanne Cash, Ana Gabriel, Jamey Johnson, Alison Krauss, Raul Malo of The Mavericks, Neil Young, Promise of the Real, Buckwheat Zydeco and past Gershwin Prize honoree Paul Simon.