Eric Hutchinson Nizlopi Joshua James William Fitzsimmons Sean Hayes Matt Duke Speechwriters Llc Ernie Halter Sara Bareillies Gavin Degraw The Duhks Basia Bulat Florez Joseph Haydn Jason Mraz Thomas Cunningham Barefoot Truth David Ryan Harris Andrew Allen Sam Burchfield The Feeling Andy Davis Matt Wertz Matt Nathanson Dj Sasha And Digweed Hanson Matt Hires Steve Moakler Jack Johnson Brian Mcfadden Priory Jason Polley Shane Filan Sietta A-Mei Bushwalla Emily Zeck Vanladylove Bulldog Mansion Honey Island Swamp Band My Goodness Lake Street Dive Credence Tahuna Breaks Swingfly Jump, Little Children Luminescent Orchestrii The Holmes Brothers Fyfe Dangerfield