The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musicians Sting (far L) and Bruno Mars (C) perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musicians Sting (L) and Bruno Mars (C) perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Ziggy Marley, Bruno Mars and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Ziggy Marley, Bruno Mars and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Ziggy Marley, Bruno Mars and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Sting, Ziggy Marley and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Bruno Mars and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Bruno Mars and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: (L-R) Musicians Sting, Ziggy Marley and Rihanna perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musicians Sting (L) and Bruno Mars perform onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musician Bruno Mars performs onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musician Bruno Mars performs onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

The 55th Annual GRAMMY Awards - Show

LOS ANGELES, CA - FEBRUARY 10: Musician Sting (C) performs onstage at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)