This looks like another instance of the infamous and intractable bug 34: https://gitlab.com/lilypond/lilypond/-/issues/34
The work-round is to add a corresponding grace spacer note in the other staff: https://lists.gnu.org/archive/html/bug-lilypond/2012-08/msg00084.html > On 4 Nov 2021, at 17:15, K. L. <fjn6...@gmail.com> wrote: > > % PianoStaff with first Note \slashedGrace .. > % Layout-Fail > % double tempo > % double time > % double clef (2.line) > > \version "2.22.0" > > piano_mel_error = \relative c''' { > \clef treble > \key es \major > \time 2/4 > \tempo 4 = 100 > \autoBeamOff > > \slashedGrace cis8 < g d' >4 > \slashedGrace cis8 < g d' >4 | > \acciaccatura cis,8 < g d' >4 \acciaccatura cis8 < g d' >8 g \bar "||" > c8[ < g es >8] g[ < g es >8] | g[ c,] c[ c] | > \break > } > > piano_mel = \relative c''' { > \clef treble > \key es \major > \time 2/4 > \tempo 4 = 100 > \autoBeamOff > > r8 \slashedGrace cis16 < g d' >8 > \slashedGrace cis8 < g d' >4 | > \acciaccatura cis,8 < g d' >4 \acciaccatura cis8 < g d' >8 g \bar "||" > c8[ < g es >8] g[ < g es >8] | g[ c,] c[ c] | > \break > } > > piano_bas = \relative c { > \clef bass > \key es \major > \time 2/4 > \tempo 4 = 100 > \autoBeamOff > > g8[ aes b c] | d[ es f g] \bar "||" c4 b | bes a | > \break > } > > \score { > << > > \new PianoStaff = "errpiano" > \with { > instrumentName = "Piano" > midiInstrument = "acoustic grand" > } > << > \new Staff = "errpmal" { > \piano_mel_error > % \piano_mel > } > \new Staff = "errpbas" { > \piano_bas > } > >> > > >> > > \layout { } > } > > > > _______________________________________________ > bug-lilypond mailing list > bug-lilypond@gnu.org > https://lists.gnu.org/mailman/listinfo/bug-lilypond _______________________________________________ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond