I finally got around to Dark Souls, and was surprised to discover how little music there is outside of boss fights. In a way, this contextualizes my previous experience with Soulsborne soundtracks, not necessarily as an indicator but as an expectation setter. Regardless, I found this soundtrack much more approachable.
The majority of music in this game is dark, though in a variety of tones. The game's theme of decay and corruption is woven into the music, with additional mood worked in according to the intended characterization. This can be a more standard progression structure for more noble characters, or a more sinister progression for more horrific ones. More important to me, however, is the discernible melodies; each piece has a motif and develops it. I had expected a more ambient-heavy soundtrack, and what I got was much more to my liking.
That being said, I should be more careful with the expectations I come with for these features, as they can strongly impact my final perceptions.