This is off of the Credo album by the Schola Regina in Paris. Lemme tell you, I've heard this sung before, at a Confirmation Mass and a funeral. It's nice. But I've never heard it sung with the layered vocal accompaniment. Usually it's just the cantor singing the melody.
I don't think I shall ever allow it to be sung at a funeral or other liturgy in which I control the music with just a cantor. I'm not sure what the actual score calls for. The description just says 'tenor.' This is just so beautiful.