This mod contains alternative viking / fantasy themed music from Celestial Aeon Project and forfedre artists as mp3 files ready to be integrated to your Valheim game. The prerequisite is to install Custom Audio mod https://www.nexusmods.com/valheim/mods/90 first because this mod relies on the additional music integration offered by it. There is no copyright problems regarding the tunes as I am the composer / producer of Celestial Aeon Project and forfedre. I reserve all the rights to the music itself - you are allowed to copy the mp3s and listen to them, but not publish them or upload them to any services or take any ownership of the music. 

Installation:

1) first download and install the Custom Audio mod from  https://www.nexusmods.com/valheim/mods/90

2) download this mod and you should find a CustomAudio.zip file in the Valheim\BepInEx\plugins folder

3) extract the zip file and it should create multiple subfolders to Valheim\BepInEx\plugins\CustomAudio\Music root folder containing mp3 files inside each. Folders include blackforest, combat, evening etc.

That's it! When you start the game, it should play the relevant mp3 files as music in the scenes defined by those subfolder names. Mountain tunes when you are in mountain biome, forest in forest etc. 

You can find Celestial Aeon Project and forfedre on streaming services as well:

https://open.spotify.com/artist/3erL8NEQbmmOXhO6yyVWxO - Celestial Aeon Project
https://open.spotify.com/artist/56lSAnlEsyFYGXvdzXyICW - forfedre