The music in Mass Effect one was the best, in my opinion. Mass Effect 2 was a better game, but the music went cinematic-epic instead of "alien chillout techno rave".
For a while I defined my musical tastes as: "would it sound appropriate in a bar in Mass Effect 1?"
Now I'll spam a few of my favourites that I found during that phase:
https://beatspace-celestialdragon.bandcamp.com/album/distant-system-spiral-empire-celestial-dragon
https://dreamstatelogic.bandcamp.com/album/era2
https://cryochamber.bandcamp.com/album/furthermore
https://redshift2.bandcamp.com/album/life-to-come
And shamelessly promote [email protected]