In a special performance, Kenny Chesney will duet with George Strait on the May 18 telecast. The two will sing their "Shiftwork" from Chesney's album Poets & Pirates, live for the first time. The two will also face off against each other in the Entertainer of the Year category.
Chesney leads the pack of nominated artists, earning 11 nominations this year, including top male vocalist. Other big nominees include Rodney Atkins, who nabbed six nods, and Big & Rich and Sugarland with four nominations each.
Previously announced performers include: Carrie Underwood, Brad Paisley, Garth Brooks, Taylor Swift, among others. The Academy also announced that Criss Angel, Jewel and Dr. Phil and Robin McGraw are expected to make appearances.
Fans may vote in all categories at www.voteACM.com. The awards, hosted by Reba McEntire, will air live on May 18 (8 p.m. ET, CBS) from Las Vegas's MGM Grand Garden Arena.