The O Antiphon for Magnificat at Vespers on December 20:

O Key of David and scepter of the house of Israel, you open and no one can close, you close and no one can open: come and rescue the prisoners who are in darkness and the shadow of death.

For their 2016 debut recording Drop Down, Ye Heavens, the London-based student-formed choir Siglo de Oro commissioned a new set of O Antiphons from various British composers, sung in English and set for choir and saxophone.  Here is Francis Pott’s rich setting of “O Key of David”:

O come, Thou Key of David, come,
And open wide our heav’nly home;
Make safe the way that leads on high,
And close the path to misery.

Rejoice! Rejoice! Emmanuel
Shall come to thee, O Israel!

— Rick Krueger

(Image: O Clavis David by Linda Henke, Te Deum Designs.)