\version "2.20.0"
% \pointAndClickOff % <= à décommenter quand tout est fini(réduit la taille du pdf)

\header {
  title = "TROIS PETITS RONDOS Plus un"
  subtitle = "pour la main gauche"
  poet = ""
  composer = "Jipé"
  meter = ""
  %opus = "05/2021 rev."
  arranger = ""
  instrument = "piano"
  dedication = "  "
  piece = ""
  % head = "" % => ? 
  copyright = "usage privé"
  footer = ""
  tagline = "Music engraving by Lilypond 2.20.0"
}

\layout {
  %#(layout-set-staff-size 20) %% => la taille 20 est par défaut
  indent = 40
} 

\paper {
  short-indent = 0 %\mm % <= la grandeur mm est par défaut
  system-system-spacing.basic-distance = 20 %% espacements inter systèmes
  ragged-bottom = ##t
  ragged-last-bottom = ##t
}

Pour_commencer = \relative c {
  \key f \major
  \time 3/4
  \clef "bass"
  \set Score.voltaSpannerDuration = #(ly:make-moment 3/4)  
  \repeat volta 2 {
    g'4 g g|
    c, r r|
    d d d|
    g, r r
    %^\markup "FIN"
    \tweak break-visibility #begin-of-line-invisible  
    \tweak self-alignment-X #RIGHT
    \tweak extra-offset #'(1 . 1)
    \mark\markup\smaller\italic "FIN"
    %\bar "||"
    \break
    \bar ".|:-||"
    %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 45))
  }
  \alternative { 
    {
      fis8 g dis c b dis|
      fis ais r f! b, d
      a'! c, g' b r4 
      %\bar ":|."
      %\break 
      %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details#'((Y-offset . 60)) 
    }
    { 
      fis'8 dis c g' r ais|
      b, d fis r g fis|
      b, ais' c r cis f,|
      a, d g r dis fis |
      \break
      %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 75))
      gis8 g! b, a' ais r|
      fis g! b, c fis,4 
      \bar ":|."
    }
  }
}

Et_ensuite = \relative c {
  \key f \major
  \time 3/4
  \clef "bass"
  \set Score.voltaSpannerDuration = #(ly:make-moment 3/4)  
  \set Score.currentBarNumber = #15 % <= option
  \bar ""
  \repeat volta 2 { 
    gis'8 g! b, a' ais4|
    fis8 g b, c fis4 %^\markup "FIN" 
    %\bar "||"
    \break
    \tweak break-visibility #begin-of-line-invisible  
    \tweak self-alignment-X #RIGHT
    \tweak extra-offset #'(1 . 1)
    \mark\markup\smaller\italic "FIN"
    \bar ".|:-||"
    %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 115))
  }
    \alternative { 
      {
        <fis d>8 <fis d> <g cis,> <ais dis, ais>4.|
        <e dis>8 <e dis> <fis c> <a e gis,>4. 
        %\bar ":|."\break 
        %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 130))               
      }
      {
        <fis e>8 <fis e> <g d> <ais f! cis>4.|
        <gis d>8 <gis d> <f! c> <a dis, gis,>4. 
        \bar ":|."
      }
    }
  %\pageBreak
}

Pour_finir = \relative c {
  \key f \major
  \time 2/4
  \clef "bass"
  \set Score.voltaSpannerDuration = #(ly:make-moment 3/4)  
  \set Score.currentBarNumber = #21 % <= option
  \bar ""
  \repeat volta 2 { 
    \tuplet 3/2 4 {<fis c>4 g8 <ais d,> b <cis f,!> }|
    \tuplet 3/2 4 {<d g,>4 cis8 < c! f,> fis, <b g>
      %^\markup "
    }
    %\bar "||"
    \tweak break-visibility #begin-of-line-invisible  
    \tweak self-alignment-X #RIGHT
    \tweak extra-offset #'(1 . 1)
    \mark\markup\smaller\italic "FIN"
    \break
    \bar ".|:-||"
    %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 40)) 
  }
  \alternative { 
    {
      \clef treble fis''8 b, dis ais|
      f \clef bass b, d fis, 
      \bar ":|."
      %\break 
      %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 55)) 
    }
    {
      a,,,4 a'|
      f' a|
      c fis|
      g,, g'|
      b d|
      f gis 
      \bar ":|."
      %\once\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 70)) 
    }
  }
}

% \book { % <= inutile s'il n'y a qu'un seul livre
  \score {
      <<
        \new Staff = "Pour_commencer"        
        \with { instrumentName = \markup\bold "Pour commencer" }
        <<
          \context Voice = "Pour_commencer" <<
           \clef "bass"
             \Pour_commencer
             %\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 30))
             %\override VerticalAxisGroup.staff-staff-spacing.basic-distance = #13                       
          >>
        >>
      >>
      \layout { system-count = 4 }
      \header { 
        opus = \markup\column {
          "05/2021 rev." 
          %% juste un peu d'espace vertical :
          \vspace #2
        }
      }
   }
   %% juste un peu d'espace vertical :
   \markup\vspace #3.5
   \score {
      <<
        \new Staff = "Et_ensuite"        
        \with {
          instrumentName = \markup\bold "Et ensuite" }
          <<
          \context Voice = "Et_ensuite" <<
           \clef "bass"
            \Et_ensuite
            %\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 100))             
          >>
        >>
      >>
      \layout { system-count = 3 }
    }
    \pageBreak
    %% juste un peu d'espace vertical :
    \markup\vspace #2
    \score {
      <<
        \new Staff = "Pour_finir"
         \with { instrumentName = \markup\bold "Pour finir" }
        <<
          \context Voice = "Pour_finir" <<
            \clef "bass"
             \Pour_finir
             %\overrideProperty Score.NonMusicalPaperColumn.line-break-system-details #'((Y-offset . 25))
          >>
        >>
      >>
      \layout { system-count = 3 }
  } 
%}