Super Meat Boy has some dark music tracks in it (going by the original OST, and not the other one that was used for a console release and done by a different person). Specifically:
* The music for chapter 2.
* Carmeaty Burana, which plays during the chapter "The End". (The name is a play on Carmina Burana, which I mentioned earlier in the topic.)
Celeste has Oshiro's theme (don't remember what the track is called, but the theme makes another appearance in the final part of "Scattered and Lost"), as well as some rather creepy music in Chapter 5.
Also, from Castlevania: Symphony of the Night, I would say that Finale Toccata is pretty dark. (If you've played through this game, you've probably heard the early part of the track a lot, as one could say that this track is over-used, but you might not be familiar with the later part of the track, when a bit of percussion enters.)
In Timespinner, I could mention the music track that plays when you fight that one scientist boss.
Edit: The Legend of Zelda: Majora's Mask has another rather famous scary track in it; it's the one that plays when there's less than 6 hours until the moon crashes into Termina.
Post edited July 25, 2022 by dtgreene