ACM Adds Four Performers

Terri Clark , Diamond Rio , LeAnn Rimes and Wynonna will perform at the Academy of Country Music awards in Las Vegas on May 21. Kellie Coffey , Jennifer Hanson , Rebecca Lynn Howard , Joe Nichols , Blake Shelton , Darryl Worley , Emerson Drive , Pinmonkey and NASCAR’s Tony Stewart will serve as presenters. Previously announced performers include Alabama , Brooks & Dunn , Kenny Chesney , Alan Jackson , Toby Keith , Martina McBride , Willie Nelson , George Strait and Shania Twain .