I had the same problem so I recorded about every song I noticed missing and also a lot that have been added by comments.
Now some conflicts I have with posting here.

1. I don't want to promote my channel with this, just share songs that really need to be heard outside of the game. But it's still some kind of promoition I guess. o.ò"
2. I am not sure if this even is allowed. I mean I only took songs that aren't on the official soundtrack, but I am still unsure.
If there is a problem with this feel free to delete it.

But if it's ok and you also have a song that might be missing and isn't on my list you can comment on one of the vids and I'm probably gonna add it in time.

Here is the playlist.
https://www.youtube.com/playlist?list=P ... I1lhovPNWB