I’ve recently been doing a few tests on what metadata it is possible to add via agents, so may be able to help you.
Here’s a quick proof of concept metadata agent. If you have a little programming knowledge then you can adapt it as needed. I used the simplest case of adding the entire contents of summary.txt to the artist biography or album review depending on where the file is saved, if you need tag support then you could add a library like tinytag to read the files.
MusicSummaryTest.bundle.zip (2.1 KB)
