This vanilla friendly mod enrich RimWorld with lot of new soundtracks in addition to the existing ones. Mostly electronic music from the vast Modarchive. The mod is currently take 1.6GB space, and I might add more tracks later.
This expansions mostly containing dynamic daytime tracks to break the mellow of the base mod.
The music of the Rim Expansion I mod can be found here:
https://steamcommunity.com/sharedfiles/filedetails/?id=2813886803
The music of the Rim Expansion II mod can be found here:
https://steamcommunity.com/sharedfiles/filedetails/?id=2964634404
