Miranda Lambert & Carrie Underwood performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Miranda Lambert & Carrie Underwood performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Miranda Lambert performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Miranda Lambert performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Carrie Underwood performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw and wife Faith Hill kiss onstage during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw and wife Faith Hill kiss onstage during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw and wife Faith Hill kiss onstage during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw and wife Faith Hill kiss onstage during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw performs during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Tim McGraw performs during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Luke Bryan performs during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
C Flanigan/FilmMagic
Luke Bryan performs during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Brian Kelley and Tyler Hubbard of Florida Georgia Line perform at the 2014 CMA Festival on June 7, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Tyler Hubbard of Florida Georgia Line perform at the 2014 CMA Festival on June 7, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Tyler Hubbard of Florida Georgia Line perform at the 2014 CMA Festival on June 7, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Blake Shelton performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Hillary Scott of Lady Antebellum performs onstage at the 2014 CMA Festival on June 8, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Charles Kelley, Hillary Scott and Dave Haywood of Lady Antebellum perform onstage at the 2014 CMA Festival on June 8, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Hillary Scott of Lady Antebellum performs onstage at the 2014 CMA Festival on June 8, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Kellie Pickler performs onstage at the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)
Kellie Pickler performs onstage at the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Christopher Polk/Getty Images)
Jamie Lynn Spears performs on the Bud Light Stage at the Bridestone Arena at the 2014 CMA Festival on June 8, 2014 in Nashville, Tennessee. (Photo by Frederick Breedon/WireImage)
Keith Urban performs during the 2014 CMA Festival at LP Field on June 7, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Keith Urban performs during the 2014 CMA Festival at LP Field on June 7, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Jason Aldean performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Brad Paisley performs onstage at the 2014 CMA Festival on June 8, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Neil Perry, Kimberly Perry, and Reid Perry of The Band Perry perform at LP Field at the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Frederick Breedon IV/WireImage)
Kimberly Perry of The Band Perry performs during the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Kimberly Perry of The Band Perry performs during the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Hunter Hayes performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Hunter Hayes performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Hunter Hayes performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Cassadee Pope performs during the 2014 CMA Festival at LP Field on June 6, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Danielle Bradbery performs during the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)
Brantley Gilbert performs during the 2014 CMA Festival at LP Field on June 5, 2014 in Nashville, Tennessee. (Photo by C Flanigan/FilmMagic)
Eric Church performs during the 2014 CMA Festival on June 6, 2014 in Nashville, Tennessee. (Photo by Larry Busacca/Getty Images)