Those of you who like to make a link between pictures and music should try the ASA OST :
Karreo.bandcamp.com
It's free to listen in streaming, and you can buy it for a low price if you want to support the composer Stélian Derenne, from Karreo (sountracks producer, as they call themselves).
I particularly enjoy the main theme "A Space Journey", and the theme of planet Kepler "Odd arrival" (try it at 1:50 ;)
But maybe these songs will make any sense for you only when you play the game !