for slow and tensed sex i'd say pink floyd-shine on you crazy diamond or in the flash and for hot, fast and passionate sex i suggest led zeppelin-immigrant song or even better deep purple-burn or highway star.
Heheh, I lost my viriginty to my husband in his band's studio to the Doors. So I'm still partial to the Doors for lovemaking. Anything is good though, I love having sex with music on. It creates a tempo and a mood that affects what type of experience you'll have. Just last night after our kids went to bed, we had our music playing on random, and we had some slow songs, and some fast ones, and each song had an impact on our actions. *sighs* I want some more. Peace.