"Hark, the Herald Angels Sing": 1739.
"O Come, All Ye Faithful": 1751.
"The First Noel": 1823.
"We Three Kings": 1857.
The music we sing at Christmas has been around for a while. I think of this especially with Advent carols like "O Come, O Come Emmanuel, which traces its origins back to the 12th century or earlier.
These are ancient chants, tunes that link us to generations of worshippers and carolers.
It's one part of the season that never changes, the words and melodies we learned before we could read, ribbons of song that tie us to the past, that carry with them the promise of hope fulfilled.