O Magnum Mysterium is a responsorial chant from the Matins of Christmas. A number of composers have reworked the chant into a contemporary setting. This version was composed in 1994 by American composer Morten Lauridsen, one of the most performed composers in America, sung by the Choir of King’s College, Cambridge. Lauridsen said of his composition, "I wanted this piece to resonate immediately and deeply into the core of the listener, to illumine through sound."
O magnum mysterium, et admirabile sacramentum, ut animalia viderent Dominum natum, jacentem in praesepio! Beata Virgo, cujus viscera meruerunt portare Dominum Christum. Alleluia!
"O great mystery, and wonderful sacrament, that animals should see the new-born Lord, lying in a manger!
Blessed is the Virgin whose womb was worthy to bear Christ the Lord. Alleluia!"