Is this something like what you’re looking for?
%%
\version "2.22.1"
\new Score
\new PianoStaff
<<
\new Staff << {c''2 b'4 a' g'1} \\ {e'2. f'4 e'2 d'} >>
\new Staff << {\clef bass g2. a8 b c'2 b} \\ {c4 e2 d4 g1} >>
>>
\layout {
\context {
\Voice
\override NoteHead.before-line-breaking = #(lambda (grob)
(if (= 1 (ly:grob-property
grob 'duration-log))
(ly:grob-set-property!
grob 'duration-log 2)
#t)
)
\override Stem.stencil = #(lambda (stem)
(if (= 1 (ly:grob-property stem 'duration-log))
#f
(ly:stem::print stem)
))
} }
%%
> 2 juni 2021 kl. 22:29 skrev Kees van den Doel <kvd...@gmail.com>:
>
> I want to change all half-notes in an existing score to look like quarter
> note with no stem.
> Everything else should remain unchanged.
> Is there a way to do this without editing every occurrence?
>
> Thanks.
