opensheetmusicdispl VS abjad

On a related note, VexFlow is a project for rendering music notation in the browser.

https://github.com/vexflow/vexflow/

OpenSheetMusicDisplay is a higher-level library that uses VexFlow to render entire MusicXML documents.

https://github.com/opensheetmusicdisplay/opensheetmusicdispl...

Not mentioned in the article, but a couple of notable open-source libraries for rendering music notation in the browser:

A JavaScript library for rendering music notation and guitar tablature - https://github.com/0xfe/vexflow

OpenSheetMusicDisplay renders sheet music in MusicXML format - https://github.com/opensheetmusicdisplay/opensheetmusicdispl...

And for the intrepid folks who prefer algorithmic or computer-assisted composition, there's Abjad, a Python-based wrapper around LilyPond.

https://abjad.github.io/

The abjad library looks really interesting, as it basically gives a Python API for Lilypond. It would help me do all the main features I want. However, from the way it does its Lilypond objects, each song would have to output its own PDF. I don't see how I can use something like PyLaTeX to concatenate all those existing PDFs and make nice hyperlinks and indexes for it all.

This could be done in many other ways. Indeed this is not even the standard way (that would be coding a 2to3 fixer). The practical solution is not general (for instance, it does not support nested classes). Also, it has problems with comments (as we lose them in the AST). But, for the practical purpose (patching abjad) it was good enough (You can see the result here.