In the latest update Angus Abranson mentioned that all backers at the Digital Rulebook Plus or Rulebook Plus levels get a Space 1889: Soundtrack for free (MP3 files) or for £11 if they need a physical copy as well. The soundtrack has been composed by German musician Ralf Kurtsiefer. You can check out a sample on Youtube.
I have always been a big fan of roleplaying game soundtracks and I am very happy that we’ll get one for Space 1889, too! If you haven’t backed Space 1889 on Kickstarter, yet, you still have 13 days to do so.