Al Paris
Formerly of Kool & The Gang
Andy Grammer
Chris Barron
lead singer of Spin Doctors
Carly Rae Jepsen
Colbie Caillat
Emerson Hart
of Tonic
Kevin Griffin
of Better than Ezra
Jesse McCartney
KT Tunstall
Leigh Nash
of Sixpence None The Richer
Mark McGrath
of Sugar Ray
Ken & Drew of Sister Hazel
Taylor Hicks
Wally Palmar
of The Romantics