She'll sing the title track of her new movie, "Country Strong," and will be joined by Vince Gill.
The film hits theaters in Los Angeles and Nashville on Dec. 22 and nationwide on Jan. 7. The soundtrack will be released Oct. 26.
Previously announced performers for the CMA Awards include Kenny Chesney, Lady Antebellum, Brad Paisley, Rascal Flatts, Reba McEntire, Taylor Swift, Carrie Underwood, and Keith Urban. Zac Brown Band and Alan Jackson will perform together, and Miranda Lambert and Sheryl Crow will sing a duet to honor Loretta Lynn's 50th anniversary as a recording artist.
The CMA Awards will air live from Nashville's Bridgestone Arena Nov. 10 on ABC.