I also have a "Grand Pianist" that was given to me as a present, and
I do have a hard copy of an English manual -- about 24 pages long.
I can't remember how I managed to get the English manual. If you're
interested I could scan it into a PDF file and send it on to you.
I am very interested in seeing how you could convert standard MIDI
files into something that could be played on the Sega toy.

Phil Dayson
Vancouver, B.C., Canada