My favorite Christmas song would be the carol of the bells. It is beautiful and timeless. As well as the Christmas cannon. I could listen to these two for hours. One of my favorite performers of these are Trans Siberian Orchestra. If you do not know who they are just you tube them and be ready to be blown away. I saw them live many years ago while Jay and I were dating. They were fantastic and the night was so special.
Give them a listen and enjoy.