(Photo by Rick Diamond/Getty Images for CBS Radio)
ACM Award Nominations, Entertainer of The Year - Garth Brooks
(Photo by Daniel Boczarski/Getty Images)
ACM Award Nominations, Entertainer of The Year & Male Vocalist of the Year - Luke Bryan
(Photo by Neilson Barnard/Getty Images)
ACM Award Nominations, Entertainer of The Year & Female Vocalist of the Year - Miranda Lambert
(Photo credit ROBYN BECK/AFP/Getty Images)
ACM Award Nominations, Entertainer of The Year & Vocal Duo of the Year - Florida Georgia Line
(Photo by Rick Diamond/Getty Images for CBS Radio)
ACM Award Nominations, Male Vocalist of the Year - Dierks Bentley
(Photo by Maury Phillips/Getty Images for CBS Radio)
ACM Award Nominations, Male Vocalist of the Year - Eric Church
LOS ANGELES, CA - FEBRUARY 08: Recording Artist Eric Church performs onstage during The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
ACM Award Nominations, Male Vocalist of the Year - Brad Paisley
(Photo by Duane Prokop/Getty Images)
ACM Award Nominations, Male Vocalist of the Year - Blake Shelton
(Photo by Larry Busacca/Getty Images)
ACM Award Nominations, Female Vocalist of the Year - Martina McBride
(Photo by Rick Diamond/Getty Images)
ACM Award Nominations, Female Vocalist of the Year - Brandy Clark
(Photo by Terry Wyatt/Getty Images)
ACM Award Nominations, Female Vocalist of the Year - Carrie Underwood
(Photo by Theo Wargo/Getty Images for Global Citizen Festival)
ACM Award Nominations, Female Vocalist of the Year - Kacey Musgraves
(Photo by Terry Wyatt/Getty Images for the Country Music Hall of Fame & Museum)