This audio track plays in the midgame dungeon, the Cataclysmoon.
The file in this Backup folder is the original, low-quality,
extremely crunchy version of the track.

I was able to find a higher-quality version of the same track
and took the liberty of replacing it in-game since, in my
opinion, this one really deserved to be heard in better clarity.

For "purists" who want to experience precisely what Mio put in
the game originally, you may copy and paste this file into the
Music folder of the game. You may want to make a backup of the
existing file in the Music folder in the event that you wind up
preferring the higher-quality version.

I will say that I have conferred with Mio directly about this
and they have confirmed that the low-quality original track
was only included to keep file sizes low. Thus, although I
cannot speak on Mio's behalf, it is my opinion that the high
quality version of the track aligns more closely with what
Mio would have originally wanted in the game had space
considerations not been a concern.

Regards, and enjoy the game!

- Goburinbro, /vrpg/ Honyaku R&D