Sorry if I'm reposting these, stopped checking for them after page 7 or so.
Cortex Command:
Soundtrack not available seperately, game is 20$ on steam. I would recommend listening to the whole thing, it's short and pretty much every track is good in its own right. If you don't have the time for that at least check out cc2g, thisworld5 and ruinexploration.
Fran Bow: https://isakmartinsson.bandcamp.com/album/fran-bow-original-soundtrack
This one can be bought on its own and is much longer. Definitely listen to A Little Talk, This Is The Forest, Black Tears, The Bow Family, Kamala Hunt Theme, Mabuka, Dance With The Shoes On and Towards Light. Almost everything else is just as good as these, but they're the ones I heard so many times I remember them by name.