The O Antiphons are historic antiphons designated for the Magnificat, which is the traditional canticle for Vespers. There are seven O Antiphons, sung on the seven Vespers leading up to December 24th. Seven years ago, we asked Pr. Sean Daenzer to record these Antiphons sung to the Gregorian tones in The Brotherhood Prayer Book, beginning on page 397, along with the Magnificat. We’re posting them again this year with links to each one.
- December 17: O Wisdom
- December 18: O Adonai
- December 19: O Root of Jesse
- December 20: O Key of David
- December 21: O Dayspring
- December 22: O King of the Nations
- December 23: O Emmanuel
The order for singing this Vespers canticle is 
Antiphon, Magnificat, Antiphon. The name of each antiphon is derived from Old Testament titles given to the Messiah. In fact, the hymn, “O Come, O Come Emmanuel,” is a lyrical version of these antiphons.