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by coreyp_1 1159 days ago
Probably not exactly what you're thinking, but here's my stuff:

I used lilypond to typeset a lot of music, and then python scripts to chop them up so that I could overlay it on some videos of my own playing.

I have used Manim to create animations to go along with some music instruction videos that I'm creating.

I have created my own back/forward pedal to control a slideshow while playing the piano (using 2 arduinos, 1 in the pedal and another at the computer for wireless communication).

I used PHP to generate keyboard images from chord descriptions many years ago.

Use IMSLP as a music resource. Also, Google books (https://www.google.com/search?tbo=p&tbm=bks&q=hymnal&tbs=,bk...).