George Strait, Martina McBride and all five nominees for the Horizon award will perform during the CMA Awards on Nov. 9 in Nashville. Strait is the most-nominated artist in CMA history with 73 total nominations. McBride has won the female vocalist three times, and is nominated this year. The Horizon nominees are Dierks Bentley, Big & Rich, Julie Roberts, Josh Turner and Gretchen Wilson. Previously announced performers include Kenny Chesney, Sara Evans, Alan Jackson, Alison Krauss and Brad Paisley, Toby Keith, Reba McEntire, Tim McGraw, Rascal Flatts, Shania Twain with Billy Currington, Keith Urban and Wilson. Brooks & Dunn will host the show, to be televised on CBS.