Hi,
good job ! congratulations !
for me it doesn’t work with firefox under w10.
works with Chrome but not the link you indicate. I have to open the editor to be able to run the program
I use loopMidi
https://editor.p5js.org/mrbombmusic/sketches/KEtHAPkJ
i notice that the yellow column meets some “jumps” and don’t go one column by one column but 2 or 3. so the display is not smooth.
EDIT : lot of latence… and chrome crashes after 30 seconds…