Yolanda Adams, Steven Tyler & Joe Perry of Aerosmith, Sara Bareilles, Jonathan Coulton, Alex Ebert of Edward Sharpe & The Magnetic Zeros, The Flaming Lips, Lady Antebellum, Cyndi Lauper & Rob Hyman, John Legend, Panic! at the Disco, Plain White T's, They Might Be Giants, T.I., and Domani & Lil'C