show midi input on screen using Music21

[Áron Boros]

Hi all,

I feel like this should be easy -- but the solutions I've found feel wrong.  I'd like to connect my mac to a midi device (a keyboard), then display the notes being played in real-time. (one note or chord at a time -- whatever keys are depressed at any point in time)  

The only way I figured out how to do this was to use .write('musicxml.png') to save a PNG of the notes to a file, then load that png in a tkinter window.  But loading MuseScore and saving and reading the file is really slow -- not nearly fast enough to show the notes in real-time.  

Using LilyPond (.write('lily.png')) was a little bit faster but still took maybe half a second to update.  

I could manually draw the staff and notes, which would be fast, but ugly and defeats the purpose of using music21.   (see https://www.101computing.net/music-score-using-python/) 

Is there a better way to do this?  Is Music21 not the right tool for this?  

Any thoughts would be much appreciated. 

Aron

[Michael Scott Cuthbert]

There are ways of doing this with music21, but you’ll find that the beta software music21j  (Javascript) works much better and way simpler for this (Music21’s not really a realtime MIDI tool).  There are already demo files on how to do exactly that in that software’s testHTML folder.

Best,

Myke

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