That’s a beautiful tune.
Our choir also sings his Dixit Maria, suitable for the Annunciation, Advent or Christmas. "Then said Mary to the angel (in some versions, "Gabriel"): Behold the handmaid of the Lord; let it be done to me according to thy word."
The fun thing about following the score is that you can see the imitation happening across the parts . . . I really like YouTube . . . sometimes.