LOS ANGELES, CA - FEBRUARY 08: (L-R) Paul McCartney, Rihanna and Kanye West perform onstage during The 57th Annual GRAMMY Awards at STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)
LOS ANGELES, CA - FEBRUARY 08: (L-R) Paul McCartney, Rihanna and Kanye West perform onstage during The 57th Annual GRAMMY Awards at STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Michael Tran/FilmMagic)