Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

You already have it. It's in

"/user/My Documents/Neverwinter Nights 2/Music" folder.

It's called "mus_BG_UlgothBeard.bmu"

Copy it to the same folder and rename the copy to:

"mus_ruralday1.bmu"

Copy that and rename it to

"mus_mulsantir.bmu" to replace the night music.

Also!

had enough of the depressing bridge music?

Drag a song you think fitting and name it "Mus_lakeshore.bmu"

At last, rename a song to "mus_eternityend.bmu" to replace Fugue music .

wait, so the music at Ulgoths beard is... the FAI music? hahha

that explains the crickets...

Not the current UB music. The old one.

Also, sometimes these BMU's break on rename I found..

I'll upload a working version.

well, I long ago downloaded all those overrides and haks for the better textures and the music files, so I have no clue what I'm hearing tbh, on the old nwn2 vault page for BGTSSC there is stuff you can download..