I’ve noticed that the above does not cope well with multiple propers in succession, not recognising where one ends and the next begins… No drop cap letter and also typesets all the text actually preceding the work e.g. name of the piece etc.
^even better desktop publishing software. That’s the next best thing if you don’t want to use LaTeX for the whole thing.
however Illuminare/Source and Summit doesn’t run the latest version of Gregorio (we are pretty sure that they use gabc but not Gregorio) and the gabc isn’t the latest version. It has been out of date for a long time. Anyone printing the propers or anything more complicated than something like the first verse of Adore te devote should use it only to proof a first draft of a score transcription.
run.gregoriochant.org has a fairly recent version of Gregorio, so it's possible to process the individual scores there. Then you can assemble the resulting PDF files with your own desktop-publishing software.
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