Tune in tonight to ABC at 9:30 PM ET/PT for a special celebration of CMA Country Christmas, hosted by Sugarland's Jennifer Nettles.  Filmed at the Bridgestone Arena in downtown Nashville, the concert will include holiday classics as well as modern favorites performed by LeAnn Rimes along with Reba McEntire, Martina McBride, Darius Rucker, Little Big Town, Sugarland, Sheryl Crow, Brad Paisley, Rascal Flatts and Kellie Pickler.