In his essay on the above subject Jean Nimal said :

> Personally, this is sufficient for me not to be attracted by
> MIDI systems, as I feel that part of the feast is forgotten!
> Never mind -- I am sure some one is going to outfit a computer
> screen to represent paper running by!

This has already been done.  Richard Brandle's magnificent "Wind"
program allows MIDI files to be imported which are then displayed
on the computer screen as piano roll images.  When in Play mode these
scroll over an image of a tracker bar while the music plays.

"Wind," which I have been using for years, has become one of my most
indispensable tools for making piano rolls, without it I would be lost.

John Farrell
http://homepages.tesco.net/~stridepiano/midifiles.htm