You may be referring to a "Christmas play" or a "Christmas pageant".
Another name for a christmas song is a Christmas carol.
Victorian Christmas
Yule
What Child is This
Noel
osama bin laden
O Christmas Tree
Figgy Pudding
nativity scene
To show how.
Because Charles Dickens book a Christmas Carol won the American's over and they voted to make Christmas a holiday. Christmas is another name for Saturnalia.