I watched the Grand Ol' Opry last night and they had Julianne Hough, Carrie Underwood, and Martina McBride! They each sang one of their songs and a Christmas song. Then they joined together at the end to sing "Rocking Around the Christmas Tree" which has always been one of my favorites. Martina sang "o Holy Night" a Capella and it was AMAZING! I would so have loved to hear her sing it in person. So anyway, that is why I changed the order of the songs again. It seems like I keep adding more Christmas songs everyday!
Here's the video of Martina, Carrie, and Julianne