Today Your source for all things celebrity and entertainment. The Coachella Music Festival don't start ?til Kesha walks in. Before a full day of music, flower crowns and star-studded parties came to an end, thousands of music lovers were treated to one big surprise in the California desert. Amid an ongoing legal battle with Dr. Luke , Kesha made an appearance on stage during Zedd 's explosive set where she performed the DJ's hit song "True Colors." In videos posted onto social media shortly after the performance, the crowd appeared more than excited to see the singer on stage as she showed off her vocals.