Choir Practice: "Agnus Dei" from "Missa O Magnum Mysterium", by Tomás Luis de Victoria (1548-1611). "Missa O magnum mysterium" is derived from Victoria's motet "O magnum mysterium" which is perhaps one of the most famous works of the Renaissance period. The Agnus Dei, in its liturgical context, would have been intoned three times, whereas Victoria's Mass includes but one iteration.
Agnus Dei, qui tollis peccata mundi, miserere nobis.
