Pictures 2015 GRAMMY Performers February 6, 2015 / 10:59 AM EST / CBS News 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers Singer Ariana Grande (Photo by Kevin Winter/Getty Images for CBS Radio Inc.) 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers 2015 GRAMMY Performers Madonna. (Photo by Christopher Polk/Getty Images) 2015 GRAMMY Performers 2015 GRAMMY Performers
