Musical performers scheduled for the event include Beyonce, Mary J. Blige, Garth Brooks, Sheryl Crow, Renee Fleming, Josh Groban, Herbie Hancock, Heather Headley, Bettye LaVette, John Legend, Jennifer Nettles, John Mellencamp, Usher Raymond IV, Pete Seeger, Shakira, Bruce Springsteen, James Taylor, ...