They're both just so amazing. Ashura-kai music is love-making music. And the Weapon's shop gives full character to the type of establishment you're in. It's so easy to tell what kind of place it is just by feeling the smoothness and sleaze that comes across lol
Probably an odd pick here, but the krypt in Mortal Kombat: Deadly Alliance had a pretty chilling song playing in the background. Very simple, but very effective.