For scenes I prefer something non-lyrical so classical works best for many cases or appropriate movie soundtracks. Lyrics can be a distraction as you can end up focussing on them whereas the music can fade into the background and just be there on the edge of perception. You can also do a lot with some EBM style music.

I have a long list of tracks I play at fetish nights which range from Velvet Underground's 'Venus in Furs' to Prodigy's 'Smack my Bitch Up'