O&S probably have the best theme to listen to on the soundtrack outside of the game. But in game? I actually choose the one that plays in Ash Lake. When I first made it out of that ****** tree and looked around as the music started to play, it pretty much made the moment for me, especially as it's the only actual area to have background music of any type.
But I guess that's not a boss theme, so maybe it's uniqueness invalidates it?
Firelink Shrine! Quelaag's Domain! I may be missing some.
Whoops, that's true, both Firelink and the White Lady have music. My bad. --- Bane even prayed for Dick when he became Batman. -- Frostbite_Zero