The laptop running my ersatz Wurlitzer 125 died.  The software program
on that computer that reads the MIDI file is no longer supported by
the manufacturer.  Some time ago, an MMD contributor mentioned other
software, that also shows the piano roll vertically (as it should be)
on the screen.  I can't locate it in the Archives -- could you please
re-post.

Thank you,
Glen Jedlicka