Murg is a console tool to simplify the process of reorganizing downloaded music. It uses info like file name, count of tracks in a directory to find Discogs info. It renames a directory and tracks. It sets tags too.

You can install Murg from snapcraft:

sudo snap install --edge murg
sudo snap connect murg:mount-observe
sudo snap connect murg:process-control

Murg is a prototype. I recommend to run it with --dry option first.

murg --dry "Music/攻殻機動隊 STAND ALONE COMPLEX O.S.T"

There is --recursive option if you want to process subdirectories.