They have big hearts that match their big talent!

On April 25, Martina McBride and Blake Shelton are joining a host of friends and fellow musicians for the 12th annual Eco-Energy Best Cellars Dinner in Nashville to benefit the T. J. Martell Foundation. Joining them will be Dierks Bentley, Kix Brooks, Amy Grant, Kellie Pickler, Lisa Hartman Black and Clint Black.