Originally Posted by langley
While I can't say that it's not an homage to Fate of Atlantis (Jared would have to confirm or deny), that theme is actually a 13th century medieval hymn called Dies Irae... which translates to "Day of Wrath." Based on the title alone, you can guess why it was used in the game. This theme has appeared in movies like The Shining and, yes, did appear in Fate of Atlantis.
Ah. I'd heard of the Dies Irae before but never actually got around to listening to it. That makes more sense.