Originally Posted by Myrkrel
Kevin MacLeod is great - I've used his music in a couple of work projects.
I like the dwarf caravan idea. It could also be goblins, deep gnomes or other opportunistic underground races making some gold off of the "captive audience". I guess it all depends on if any kind of organized societies exist in the dungeon.
Some roguelikes just stick merchants in the middle of dungeons without any regard to realism, so you could go that route too.