Re: Change staff and cross staff

[Lukas-Fabian Moser]

Hi Knute,

Am 07.11.20 um 20:02 schrieb Knute Snortum:
> Here's a better MWE with my try using voices in the left hand:
>
> %%% Start
> \version "2.20.0"
> \language "english"
>
> staffUp   = \change Staff = "upper"
> staffDown = \change Staff = "lower"
>
> rh = \relative c' {
>    s8. \crossStaff e16
> }
>
> lh = \relative c' {
>    \clef bass
>    << { <gs b>8[ r16 b] } \\ { e,,4 } >>
> }
>
> \score {
>    \new PianoStaff <<
>      \new Staff = "upper" { \rh }
>      \new Staff = "lower" { \lh }
>    >>
>    \layout {
>      \context {
>        \PianoStaff
>        \consists #Span_stem_engraver
>      }
>    }
> }
> %%% End

My take, of course not so terribly different from Damian's solution:

\version "2.21.1"

\layout {
  \context {
    \PianoStaff
    \consists Span_stem_engraver
  }
}

rhmusic = {
  \time 3/4
  \key e \major
  <<
    {
      \change Staff = "lower"
      \voiceOne
      b8[ r16
      % Uncomment for alternative solution:
      % <b gis>8[ r16
      \change Staff = "upper"
      \crossStaff e'16]
    }
    \new Voice
    {
      \change Staff = "lower"
      % Uncomment for alternative solution:
      % \once\omit Stem
      \voiceOne gis4*3/4_( \crossStaff b16)
    }
  >>
  <e' gis'>4 <gis' b'>->
}

lhmusic = {
  \key e \major
  \clef "bass"
  \once \voiceTwo e,4 <e b>4 q->
}

\new PianoStaff
<<
  \new Staff = "upper" { \rhmusic }
  \new Staff = "lower"{ \lhmusic }
>>

I admit it's a bit longer, but I'd prefer to keep the magic inside the 
\rhmusic variable.

The alternative solution might be cleaner: It's a matter of either
- faking an actual chord by letting a crotchet's stem melt into a 
quaver's stem, or
- (alternative solution) doubling a notehead.

Lukas