I think the composer of the Skyrim soundtrack is no stranger to Richard Wagner. When you emerge from a dungeon you hear music that is very reminiscent of the overture of Wagner's "Rheingold". Hardly coincidental, I would think, as the "Nordic" and medieval theme would fit in well.

Why not go for the full experience? Look out from a mountaintop over Skyrim, with this in the background (start at about 1:50) : http://www.youtube.com/watch?v=E1PWz0xA5AI&feature=related

Breathtaking!