A little musical help please…

There’s a little project I’m working on that may or may not lead to anything, but at this point I’m trying to compile a list of musician’s that include science fictional or fantasy themes in some of their music. I’m not looking for filkers, but will include things like the Pixies use of UFOs in several of their songs.  Any help would be appreciated.  If you can also give record titles or songs that I could check out, that would be even better.