Something spooky, technological perhaps, to play in the background during those creepy moments as deserted buildings or spacecraft are investigated...

... or something to play when writing such adventures, get those creative juices flowing!

I like custom background music, if I use it at all, because you don't distract your players by having them trying to identify a half-remembered track.

The tempo varies, slowing towards the end. Is it that you have found something... or is it that everyone's dead already?

Enjoyable.