I confirm it's not a problem with the MT32pi because it works perfectly with the AO486 core. And within X68000 it works with Akumajou Dracula.
Issue is isolated only to this game.
![Sad :(](./images/smilies/icon_e_sad.gif)
Does anyone else experience the same thing?
I am running the HDF image downloaded from https://archive.org/download/mister_x68k