Aaron Watson Annie Downs Band Against Cancer Blondie Bob Weir Brett Young Cash Campbell Darius Rucker Cloak Hootie & the Blowfish Iris Apfel Jason Aldean Kristin Chenoweth Lee Ann Womack Maddie & Tae Music Health Alliance Nickelback Rascal Flatts Chrissy Metz Rodney Atkins Sarah Cannon Tyler Booth Tenille Arts Jessi Alexander Tracy Lawrence Tyler Farr Waylon Payne We Are Messengers Vince Gill