Keri Noble Marie Digby Kari Bremnes Catherine Feeny Charlotte Martin Maria Mena Dia Frampton Vienna Teng Scars On 45 Jem David O'Dowda Aaron Neville Mandy Moore Anton Barbeau Wakey!Wakey! Fruit Bats Amm Shana Halligan Fahrenheit Alessandro Safina Patty Griffin Fair Gem Gigi D'Alessio Bitter Sweet Deas Vail Rosie Thomas Tishamingo Bart Crow Band Roger Creager Kyle Park Priscilla Ahn Eli Young Band Delta Moon Casey Donahew Missy Higgins Stoney Larue Wade Bowen Casey Donahew Band Pat Green Sixpence None The Richer Ella Henderson Hinder Ingrid Michaelson Grace Vanderwaal Randy Rogers Band Indigo Girls Kenichiro Nishihara Tracy Chapman