Global Citizen Festival is now streaming live on YouTube with live performances featuring: Rihanna, Kendrik Lamar, Demi Lovato, Major Lazer and Metallic. #GCFestival has hosted the ruckus of Major Lazer, as well as the beautiful and seductive sounds of Demi Lovato at 3:30 p.m CST / 4:30 p.m. EST. Usher performed 'Champion' with Rubin Blades and a boys choir. His vocals are far above par. You can hear the lame backing track, but Usher puts out the effort to hit complex notes on stage. Rubin Blades adds an international flavor to the song. The Kenyan Boys Choir is currently spreading