On 2026-05-26 17:05, Peter Payzant wrote:
Hello-
Sometimes in modern versions of early music, the editor uses the
symbology shown in the attached image to indicate a change in metre.
I've looked through quite a lot of the LilyPond documentation but
haven't been able to find any info about how to create this in a
LilyPond file.
It seems that there are two issues: how to create the "breve = dotted
breve" string (?), and how to position the result above the staff,
centred on the bar line.
Back in 2023 Jean Abou Samra posted some code that would take 2 notes
and put them either side of an equals sign that was itself centered on a
bar line. And here is that code, modified to produce baroque noteheads.
Or at least it seems to, in my limited testing.
tempoChange = #(define-music-function (firstNote secondNote) (ly:music?
ly:music?) #{ \tweak font-size -1 \tweak self-alignment-X
##f \textEndMark \markup \put-adjacent #X #LEFT
\put-adjacent #X #RIGHT \general-align #X #CENTER " = "
\concat { \rhythm { \tweak style #'baroque #secondNote }
\hspace #0.375 } \concat { \hspace #0.25
\rhythm { \tweak style #'baroque #firstNote } } #})
It would be used something like \tempoChange \breve \breve.
--
Michael
