three polyphonic voices on three systems and (at the same time) on PianoStaff

[Alex Rolex]

Hello everybody, 



I am addicted to LilyPond since only a few days.

So first let me say big Thank you to those who invented this powerful program

with beautiful output!



I want to type a three-part fugue in two ways:

first as a tree-staff score,

and then as piano-score.



For convenience I want to type the voices only once.

I thought I could apply the Autochange-feature.



But it does not work as I expected. (I know. It would be a miracle.)



So, if it can be done, how can it be done?


See the example:



%%% BEGIN  3-part-Polyphony with AutoChange EXAMPLE

\version "2.10.33"





global = {

  \key c \minor

  \time 2/2

}



firstvoice = {

  \global

  \relative c' {

    es2 f |

    g as |

    bes c |

    bes2. a4 |

    bes1

  }

}



secondvoice = {

  \global

  \relative c' {

     g4 c bes as |

     g es' d c |

     bes g' f es |

     d g8 f es2 |

     d1

  }

}



bassvoice = {

  \global

  \relative c {

    c2 d |

    es f |

    g as |

    bes c |

    bes1 

  }

}



\header {

  title = "Autochange Staff"

  subtitle = "applied on polyphonic piece"

}



\score { 

  << 

    \new Staff  \new Voice  { \clef treble \firstvoice }

    \new Staff  \new Voice  { \clef alto \secondvoice }

    \new Staff  \new Voice  { \clef bass \bassvoice }

  >>

  

  \header {

    opus = "This works fine"

  }

  

}





\score { 

  << 

    \new PianoStaff 

    <<

      \autochange { 

        \override Staff.NoteCollision #'merge-differently-headed = ##t 

        \override Staff.NoteCollision #'merge-differently-dotted = ##t 

        \secondvoice 

      } 

      \context Staff = "up" \new Voice { \firstvoice }

      \context Staff = "down" \new Voice { \bassvoice }

    >>  

  >>

  

  \header{

    breakbefore = ##t

    opus = "Can this be made working in an automatic way?"

  }



}





%%% END 3-part-Polyphony with AutoChange EXAMPLE






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