There isn't much music. Makes everything seem even more desolate. Then there's loud, epic music for boss fights.
Yeah, I couldn't hear ***over Gwyn leveling me with his sword.
I was actually kind of disappointed that I didn't catch more music in that game. Given that 80% of my other posts are Armored Core musics, I went into Dark Souls expecting to hear sweet jams.
I should probably browse the OST to see if I missed any gems. I vaguely remember that giant wolf having something at least inoffensive enough that I didn't hate life after attempt 41.