NEW YORK, NY - MARCH 30:  (L-R) Rihanna, Nicki Minaj, Madonna, Deadmau5, and Kanye West onstage at the Tidal launch event #TIDALforALL at Skylight at Moynihan Station on March 30, 2015 in New York City.  (Photo by Jamie McCarthy/Getty Images for Roc Nation)