Shania Twain and John Mayer are among the latest additions to the Academy of Country Music Awards show set for Sunday (April 7). Twain will present an award, and Mayer will perform with Brad Paisley. Other presenters announced Friday include Gary Allan, Faith Hill, Trisha Yearwood, Chris Young and the Eli Young Band. Blake Shelton and Luke Bryan will host the awards show at the MGM Grand Garden Arena. It airs live at 8 p.m. ET on CBS. View CMT.com's coverage of the ACM Awards.