Here are the words of the Doxology set to four familiar tunes for use during Advent and Christmas. These files are available for copying and use without permission, and they are available in both PDF and Sibelius versions. They include guitar chords that match the hymnal chords in the original key as well as a more guitar-friendly key, if needed.
One warning: Despite the fact that all these tunes and text are quite familiar, do not ask your congregation to sing them from memory. They will forget the words! At least print the words in the worship bulletin, and all will be fine.
O Come, O Come, Emmanuel (Sibelius format)
O Come, O Come, Emmanuel (PDF format)
Advent or Christmas:
It Came Upon a Midnight Clear (Sibelius format)
It Came Upon a Midnight Clear (PDF format)
The First Noel (Sibelius format)
The First Noel (PDF format)
What Child Is This (Sibelius format)
What Child Is This (PDF format)