\version "2.15.2"
#(set-default-paper-size "a4")
#(set-global-staff-size 15)

\header {
  title = "My Title"
  subtitle = "My Subtitle"
  composer = "Dummy Composer" 
  copyright = "No copyright"
}

\paper {
  ragged-bottom = ##f
  ragged-last = ##f
  ragged-last-bottom = ##f

  top-markup-spacing #'minimum-distance = #5
%   top-markup-spacing #'space = #4
%   top-markup-spacing #'padding = #2
  top-markup-spacing #'stretchability = #15

  top-system-spacing #'minimum-distance = #0
%   top-system-spacing #'space = #3
%   top-system-spacing #'padding = #2
  top-system-spacing #'stretchability = #7
  
  markup-system-spacing #'minimum-distance = #5
%   markup-system-spacing #'space = #4
%   markup-system-spacing #'padding = #1
  markup-system-spacing #'stretchability = #18
  
%   system-system-spacing #'minimum-distance = #0
%   system-system-spacing #'space = #5
%   system-system-spacing #'padding = #2
%   system-system-spacing #'stretchability = #30
  
  last-bottom-spacing #'minimum-distance = #0
%   last-bottom-spacing #'space = #3
%   last-bottom-spacing #'padding = #2
  last-bottom-spacing #'stretchability = #7

%   score-markup-spacing #'space = #5
%   score-markup-spacing #'stretchability = #50

%   markup-markup-spacing #'space = #5
%   markup-markup-spacing #'stretchability = #30
}

\layout {
  \context { \PianoStaff
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #1.5
  }
  \context { \StaffGroup
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #2.5
    \override SystemStartBracket #'collapse-height = #1
  }
  \context { \GrandStaff
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #3.5
  }
  \context { \ChoirStaff
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #1
  }
  \context { \Staff
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #4.9
  }
  \context { \Score
    \override StaffGrouper #'staff-staff-spacing #'stretchability = #5
  }
}


dummymusic = \relative c' { c1 | \break c1 \bar "|." }

\score {
  <<
%{    \new StaffGroup << % woodwind
      \new Staff \dummymusic
      \new Staff \dummymusic
    >>%}
    \new StaffGroup << % brass
      \new Staff \dummymusic
      \new Staff \dummymusic
    >>
    \new StaffGroup << % timpani
      \new Staff \dummymusic
    >>
    \new StaffGroup << % strings (Vl & Va)
      \new GrandStaff << % violins
        \new Staff \dummymusic
        \new Staff \dummymusic
      >>
      \new Staff \dummymusic % viola(s)
    >>
    \new ChoirStaff << % choir
      \new Staff \dummymusic
      \new Staff \dummymusic
      \new Staff \dummymusic
      \new Staff \dummymusic
    >>
    \new PianoStaff << % bass group (organ, cello & double bass)
      \new Staff \dummymusic
      \new Staff \dummymusic
    >>
  >>  
}
%{
\pageBreak

% Piano reduction:
\score {
  <<
    \new ChoirStaff << % choir
      \new Staff { \dummymusic \dummymusic }
      \new Staff { \dummymusic \dummymusic }
      \new Staff { \dummymusic \dummymusic }
      \new Staff { \dummymusic \dummymusic }
    >>
    \new PianoStaff <<
      \new Staff { \dummymusic \dummymusic }
      \new Staff { \dummymusic \dummymusic }
    >>
  >>  
  \header { 
    instrument = "Piano reduction"
  }
}%}