I've been working on some version of this since May 2019. It is a web app that allows writing out music for the Highland bagpipe.

While it uses the same notation as normal music, bagpipe music tends to have a greater focus on gracenotes (embellishments). Most music software does not deal with this very well (e.g. MuseScore just displays a list of every single possible embellishment, of which there are hundreds [1]). PipeScore instead takes advantage of the fact that the form of many embellishments is dependent on the notes adjacent to it, allowing it to reduce the number of options down to just 13.

Questions/comments welcome!

[1] https://github.com/musescore/MuseScore/blob/2b428c00c9df65c3...