Hi, the notation reference virtually starts with this topic (1.2):
http://lilypond.org/doc/v2.16/Documentation/notation/writing-rhythms The first image contains a breve ( |o| ) and with double bars is an alternative style. Copying from the referenced section, you can write: \relative c'' { \time 4/2 c\breve | \override Staff.NoteHead #'style = #'altdefault b\breve \revert Staff.NoteHead #'style a\breve } Is that what you were looking for? Cheers, Joram _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user