> However, I noticed a new issue when embedding the score using > \lilypondfile inside a LaTeX document (as part of a book I’m > compiling). In this setup, both the copyright and tagline fields > completely disappear, even though they are correctly rendered when > compiling the score on its own. > > I was wondering: > – Is this behavior expected when embedding LilyPond with LaTeX (e.g., via > lilypond-book or lytex)?
Yes. You can find this in the lilypond-book documentation: If a ‘tagline’ is required, either default or custom, the entire snippet must be enclosed in a ‘\book { }’ construct. \book { \header { title = "A scale in LilyPond" } \relative { c' d e f g a b c } } Werner