You know the one I'm talking about, the one you've been whistling to yourself for the past 2 weeks or so. Yeah that one. Anyway, have you noticed that as you collect more stars, the music "fleshes" out more. When you first start the game and enter the observatory the first time the music you here is very flute heavy. As you start getting stars, the music gradually starts adding in a heavier strings part and some other parts as well. Compare the sound of this link (it's not mine), to the observatory theme in your game currently. I have 50 stars at the moment and I can definitely hear a difference. EDIT: Mum seems to think that this tune is an old waltz, possibly by Strauss. I told her that is an original Nintendo tune composed for Galaxy. But how I think I about it, I have heard it before; does anyone have anymore knowledge on this?