Re: \crossStaff confusion

[Jean Abou Samra]

Le 22/02/2022 à 07:28, Mark Probert a écrit :
> Hi, again.
>
> I'm not used to working with piano scores and ran across and example
> that required I use \crossStaff. Unfortunately, it is not doing as I
> ask it and wonder if someone can point me in the right direction.
>
> In this example I want an arpeggio line and I want the C in the bass to
> be joined (and at the correct value to) the voice above it.
>
> As an aside, the convoluted structure helps me in doing this art song
> setting as there is a voice line above the piano (not shown) and I
> wanted this example in context.



\crossStaff should be used on the voice whose stems should
extend past their staff. In this case, this is the upper voice.
To get cross-staff arpeggios, you'd put \arpeggio in both voices
and use the connectArpeggios property as shown here:

https://lilypond.org/doc/v2.23/Documentation/notation/expressive-marks-as-lines#arpeggio


\version "2.22"

\layout {
  \context {
    \PianoStaff
    \consists #Span_stem_engraver
    connectArpeggios = ##t
  }
}

upA = \new Voice \relative c' {
  \voiceOne
}

upB = \new Voice \relative c' {
  \voiceTwo
  \crossStaff <b d'>8\arpeggio r8 r4 r2
}
dwA = \new Voice \relative c {
  \voiceThree

}
dwB = \new Voice \relative c {
  \voiceFour
  c8\arpeggio r8 r4 r2
}

{
  \new PianoStaff <<
    \new Staff {
      \upA
      \upB
    }
    \new Staff {
      \clef bass
      \dwA
      \dwB
    }
  >>
}

Regards,
Jean