My woman and I have fairly similar music tastes which is very nice. We both like heavier music for this sort of thing. As she put it "Forget the ballads, I want something I can FUCK to". Heh. Lucky me.

Rammstein is just tremendous for this sort of thing. One of my favourite bands of all time, and if for some reason I had to pick only one band to use for BDSM scening, that would be the one. Also personally, little gets me going quite like Black Sabbath's "NIB".