24 27 Aimee Mann Alanis Morissette Augustana Bartees Strange Brandi Carlile Brandon Flowers Café Tacuba Damien Rice Daughtry Dave Gahan Depeche Mode Haley Reinhart Hank Williams Jr. Jason Mraz Jimmy Fallon Juanes Katharine McPhee Lizzo Macy Gray Melissa Etheridge Mike Posner Morrissey Paul Stanley Queens of the Stone Age Rachael Yamagata Riley Green Rob Thomas Rufus Wainwright Sara Bareilles Shakira Sugarland Take That Tegan and Sara The Doobie Brothers Timothee Chalamet