"Dies Irae" (Day of Wrath) of Italian friar Thomas of Celano, mentioned in "The Vampire Armand" as the hymn sung by the acolytes of Santino when they drag Armand underground and later sung to Armand by Santino.

Latin verses and their translations:

Dies irae, dies illa ---- That day of wrath will
Solvet saeculum in favilla. ---- Turn the earth to ashes.
Teste David cum Sibylla ---- As both David and Sybelle have foretold
Quantus tremor est futurus... ---- How great a tremor there will be..

No Latin available for this verse:

----And on that Day, that Final Day,
----We shall have duties for Him,
----We his Dark Angels shall take
----The Evil souls down into the
----Inferno as is His Divine Will.

No Latin available for this verse:

----And then the final plea of this hymn,
----That He have mercy on us,
----Was His Passion not for us?

Recordare, Jesu pie ---- Remember, merciful Jesus,
Quod sum causa tuae viae... ---- That I was the cause of your way...