split chord in two staves, split multiple voices in two staves

[Davide Bonetti]

Hi,

I am working on accordion left-hand educational scores;

I need to split chords (entered with chordmode) in two staves, and I 
also need to split multiple voices (4 or more) in two staves.

I am trying to find a way to do this automatically, because I have much 
material to work with.

I have tried \autochange, but the result is not what I am searching.

Attached is a minimal example, just to have an idea.

\version "2.20.0"

% autochange example with a chord
\markup "autochange example with a chord"
\score {
  \new PianoStaff
  \with {instrumentName = #"1"}
  \autochange
  \chordmode {c:/g}
}

% autochange example with multiple voices
\markup "autochange example with multiple voices"
\score {
  \new PianoStaff
  \with {instrumentName = #"2"}
  \autochange
  <<
    \autochange {e'}
    \\
    \autochange {g}
    \\
    \autochange {c'}
  >>
}

% desidered result
\markup "desidered result"
\score{
  \new PianoStaff
  \with {instrumentName = #"3"}
  \autochange
  <<
    \autochange <c' e'>
    \\
    \autochange {g}
  >>
}

Thank you and best regards.

Davide Bonetti



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