This is an addon to the Ambience mod. Which means it WONT work without it.
Currently the addon consists 89 songs. Designed for 1.12.2 the addon should work with every version of Ambience.
If you dont know how to install the addon, go to the Ambience Mod Page. There you will find a Tutorial.
I did not create the Ambience Mod, nor take part in the creation of the music.
The Ambience Mod was created by: Vazkii
The amazing music was composed by: Frederik Wiedmann