Hi Kevin.
It sounds like you might be able to do want you want with rehearsal marks.
They're built into Lilypond and do pretty much what you seem to be
describing. Details at
http://lilypond.org/doc/v2.24/Documentation/notation/bars#index-rehearsal-mark
A modification of your MWE using them:
\version "2.24.2"
\language "english"
melody = \relative c' {
\set Score.rehearsalMarkFormatter = #format-mark-box-letters
\time 6/8
\key d \major
\clef treble
\mark \default
d8[ e8 e8] g8[ a8 b8] |
\break
\mark \default
d8[ e8 e8] g8[ a8 b8] |
\fine
}
\score {
\new Voice = "mel" { \melody }
\layout {
\autoBeamOff
indent = 0\mm
}
}
The \set Score.rehearsalMarkFormatter = #format-mark-box-letters part
reformats the marks to display as letters inside a box - the default is
just a letter. By doing \default after the \mark Lilypond simply uses the
letters sequentially. If needed, the position of the marks can be adjusted.
Again, details on that are in the page linked above.
--
Michael
