You are completely right, thanks very much for your comment.
Music is important for immersion, particularly in a game like this -- which is supposed to be all atmospheric and immersive.
I am definitely thinking about it. Unfortunately, I found out about the jam a little too late, so I just didn't have the time to work on sound as much as I would have liked. But yeah, music is definitely on the to-do list and the game is still work in progress, so I am hoping I'll get there eventually. :)