The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Hunter Hayes onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Dierks Bentley (center) and Neil Perry, Kimberly Perry, and Reid Perry of The Band Perry onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Sheryl Crow onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Michael Kovac/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Hunter Hayes onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Co-hosts Taylor Swift and LL Cool J speak onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Musician Neil Perry of The Band Perry performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Nate Ruess of Fun. performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Co-hosts Taylor Swift and LL Cool J speak in the audience during The GRAMMY Nominations Concert Live!! held atBridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Luke Bryan performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Wesley Schultz, Neyla Pekarek, and Jeremiah Fraites of The Lumineers speak onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: (L-R) Musicians Hunter Hayes and Nate Ruess, Jack Antonoff and Andrew Dost of Fun. attend The GRAMMY Nominations Concert Live!! held atBridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Musician Wesley Schultz of The Lumineers onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Sheryl Crow and Chris Young attend The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: (L-R) Musicians Mickey Madden, Matt Flynn and Adam Levine of Maroon 5 perform onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Guitarist James Valentine of Maroon 5 performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Musician PJ Morton of Maroon 5 performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Adam Levine of Maroon 5 performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Music fans take cell phone photos of LL Cool J and Taylor Swift onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Michael Kovac/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

(Photo by Michael Kovac/Getty Images)

NASHVILLE, TN - DECEMBER 05: Host Taylor Swift speaks onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Michael Kovac/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Adam Levine of Maroon 5 performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Kevin Winter/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Ne-Yo performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: Singer Adam Levine of Maroon 5 performs onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Michael Kovac/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: (L-R) Host LL Cool J, host Taylor Swift, and musician Adam Levine speak onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)

The GRAMMY Nominations Concert Live!! - Show

NASHVILLE, TN - DECEMBER 05: (L-R) Host LL Cool J, host Taylor Swift, and musician Adam Levine speak onstage at The GRAMMY Nominations Concert Live!! held at Bridgestone Arena on December 5, 2012 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)