Americans tend to listen to Christmas music even if they are not Christians. I'm talking the older music, more modern music is still being made, but they can go off with unfamiliar songs or make an old song lesser than their older counterpart. Silent Night, O Holy Night, Away in a Manger, The Little Drummer Boy, White Christmas, It's Beginning to Look a Lot like Christmas, Joy to the World (Not really a Christmas song but people think of it like it is), Blue Christmas, Hark! The Herald Angels Sing, those sorts of songs.
Cimorelli - O Holy Night (Acapella)
https://www.youtube.com/watch?v=Ig7OWrKbw0s