I mentioned in my review for Batman, that I preferred the second movie. After listening to the soundtrack I still do, but the music for the first film is far superior. Having to make the soundtrack to a sequel is never easy, and Elfman tried to do something different and that is where he fails.
There are pieces in Batman Returns where the good ol' Batman theme springs up, but not often enough. The rest of the music is strange, inconsistent but because of the wide range might find uses. I would hesitate to put it in either the fantasy or the science fiction basket, as the music is just a little too unusual to suggest either. The tracks lengths vary so you can use them for particular events, or just plain background music.