Okie dokies, I've just uploaded the music box! Hopefully, it works alright :3 It was pretty quick to put together in Unity. The UI looks rough though cos I just used default stuff to make it as fast as possible. If I had tried to go back into my old Tyrano game files to add it as an option in the actual game, it likely would've taken hours, haha.
The volume might need adjusting because I don't remember what the volume difference between tracks was like, but I left the settings tab in there for volume adjustment anyways!
Also, the names of the tracks are the names I gave them. If I'm remembering correctly, all their original names were in Japanese, so I have no idea what their English translations would be >.<
Thank you for the luck! I will most certainly need it x3