Hi Paolo, > In order to speed up the compiling time, I wonder if Lilypond has a > preprocessor that can filter all the parts of the score which aren't marked > by a specific tag.
Have you looked into: 1. \skipTypesetting <http://lilypond.org/doc/v2.21/Documentation/notation/skipping-corrected-music> 2. gridly <https://github.com/openlilylib/gridly> ?? Hope that helps, Kieren. ________________________________ Kieren MacMillan, composer (he/him/his) ‣ website: www.kierenmacmillan.info ‣ email: i...@kierenmacmillan.info