Fallout 4 had some of the best ambient themes in the series in my opinion (and some of the best music in general). My favorites are the factional ones, so who had the best? (Note: This isn't a faction versus thread, this is just about the music. So leave that right out).
My personal favorite is The Institute, just because their theme oozes science and discovery and it reminds me of old PBS educational documentaries or something. Its a perfect fit for them and the environment you find yourself in once you get to The Institute.
But I also enjoy The Railroad's theme. Very nice spy theme to it. If I didn't know the game it came from, I'd swear it was 007 for the N64.
Frankly I'm not sure what The Minutemen's "theme" is considered, but I put my best guess in the poll (Liberty Lives).
The Brotherhood's is good, but doesn't stand out as much IMO. Just because its a theme we've heard before.
Any other ambient songs you really enjoy in the game?
Links:
Institute:
https://www.youtube.com/watch?v=bqt_bJUk4io&index=22&list=RD92Y9jNRTkt8%C2%A0
Railroad:
https://www.youtube.com/watch?v=gfwUDurnbx0&index=16&list=RD92Y9jNRTkt8
Brotherhood:
https://www.youtube.com/watch?v=JTuyg3YzkeY&list=RD92Y9jNRTkt8&index=12
MM:
https://www.youtube.com/watch?v=lwv7bElO0FE&list=RD92Y9jNRTkt8&index=9