\version "2.19.19"

chordsToRepeat = {
  c2 f |
}

melodyToRepeat = {
  c8 e g r f a c r |
}

melodyToRepeatFirstHalf = {
  c8 e g r r2 |
}

melodyToRepeatSecondHalf = {
  r2 f8 a c r |
}

textToRepeatFirstHalf = \lyricmode {
  do mi sol
}

textToRepeatSecondHalf = \lyricmode {
  fa la do
}

textToRepeat = \lyricmode {
  do mi sol fa la do
}

verseChords = \chordmode {
  \repeat unfold 24 \chordsToRepeat
}

verseOneMelody = \relative c' {
  \repeat unfold 24 \melodyToRepeat
}

verseOneText = \lyricmode {
  \repeat unfold 24 \textToRepeat
}

verseTwoMelody = \relative c' {
  \repeat unfold 24 \melodyToRepeat
}

verseTwoText = \lyricmode {
  \repeat unfold 24 \textToRepeat
}

prechorusChords = \chordmode {
  \repeat unfold 8 \chordsToRepeat
}

prechorusOneSoprano = \relative c' {
  \repeat unfold 8 \melodyToRepeatFirstHalf
}

prechorusOneTenor = \relative c' {
  \repeat unfold 8 \melodyToRepeatSecondHalf
}

prechorusTwoSoprano = \relative c' {
  \repeat unfold 8 \melodyToRepeatFirstHalf
}

prechorusTwoTenor = \relative c' {
  \repeat unfold 8 \melodyToRepeatSecondHalf
}

prechorusTextSoprano = \lyricmode {
  \repeat unfold 8 \textToRepeatFirstHalf
}

prechorusTextTenor = \lyricmode {
  \repeat unfold 8 \textToRepeatSecondHalf
}

chorusChords = \chordmode {
  \repeat unfold 8 \chordsToRepeat
}

chorusSoprano = \relative c' {
  \repeat unfold 8 \melodyToRepeat
}

chorusTenor = \relative c' {
  \repeat unfold 8 \melodyToRepeat
}

chorusBaritone = \relative c' {
  \repeat unfold 8 \melodyToRepeat
}

chorusText = \lyricmode {
  \repeat unfold 8 \textToRepeat
}

bridgeChords = \chordmode {
  \repeat unfold 20 \chordsToRepeat
}

bridgeSoprano = \relative c' {
  \repeat unfold 20 \melodyToRepeat
}

bridgeAlto = \relative c' {
  s1*4 |
  \repeat unfold 16 \melodyToRepeat
}

bridgeBaritone = \relative c' {
  s1*8 |
  \repeat unfold 12 \melodyToRepeat
}

bridgeTenor = \relative c' {
  s1*12 |
  \repeat unfold 8 \melodyToRepeat
}

bridgeSopranoText = \lyricmode {
  \repeat unfold 20 \textToRepeat
}

bridgeAltoText = \lyricmode {
  \repeat unfold 16 \textToRepeat
}

bridgeBaritoneText = \lyricmode {
  \repeat unfold 12 \textToRepeat
}

bridgeTenorText = \lyricmode {
  \repeat unfold 8 \textToRepeat
}

verseOne = <<
  \context ChordNames {
    \verseChords
  }

  \context Staff {
    \new Voice = "verseOneVoice" {
      \verseOneMelody
      \break
    }
  }

  \context Lyrics = "verseLyrics" {
    \lyricsto "verseOneVoice" {
      \verseOneText
    }
  }
>>

verseTwo = <<
  \context ChordNames {
    \verseChords
  }

  \context Staff {
    \new Voice = "verseTwoVoice" {
      \verseTwoMelody
      \break
    }
  }

  \context Lyrics = "verseLyrics" {
    \lyricsto "verseTwoVoice" {
      \verseTwoText
    }
  }
>>

prechorusOne = \context ChoirStaff <<
  \context ChordNames {
    \prechorusChords
  }

  \new Staff {
    \context Voice = "sopranoPrechorusVoice" {
      \prechorusOneSoprano
      \break
    }
  }

  \new Lyrics {
    \lyricsto "sopranoPrechorusVoice" {
      \prechorusTextSoprano
    }
  }

  \new Staff {
    \context Voice = "tenorPrechorusVoice" {
      \prechorusOneTenor
    }
  }

  \new Lyrics {
    \lyricsto "tenorPrechorusVoice" {
      \prechorusTextTenor
    }
  }
>>

prechorusTwo = \context ChoirStaff <<
  \context ChordNames {
    \prechorusChords
  }

  \new Staff {
    \context Voice = "sopranoPrechorusVoice" {
      \prechorusTwoSoprano
      \break
    }
  }

  \new Lyrics {
    \lyricsto "sopranoPrechorusVoice" {
      \prechorusTextSoprano
    }
  }

  \new Staff {
    \context Voice = "tenorPrechorusVoice" {
      \prechorusTwoTenor
    }
  }

  \new Lyrics {
    \lyricsto "tenorPrechorusVoice" {
      \prechorusTextTenor
    }
  }
>>

chorusOne = \context ChoirStaff <<
  \context ChordNames {
    \chorusChords
  }

  \new Staff {
    \context Voice = "sopranoChorusVoice" {
      \chorusSoprano
      \break
    }
  }

  \new Lyrics = "chorusLyrics" {
  }

  \new Staff {
    \context Voice = "baritoneChorusVoice" {
      \chorusBaritone
    }
  }

  \context Lyrics = "chorusLyrics" {
    \lyricsto "sopranoChorusVoice" {
      \chorusText
    }
  }
>>

chorusTwo = \context ChoirStaff <<
  \context ChordNames {
    \chorusChords
  }

  \new Staff {
    \context Voice = "sopranoChorusVoice" {
      \chorusSoprano
      \break
    }
  }

  \new Lyrics = "chorusLyrics" {
  }

  \new Staff {
    \context Voice = "baritoneChorusVoice" {
      \chorusBaritone
    }
  }

  \context Lyrics = "chorusLyrics" {
    \lyricsto "sopranoChorusVoice" {
      \chorusText
    }
  }
>>

bridge = \context ChoirStaff <<
  \context ChordNames {
    \bridgeChords
  }

  \new Staff \with {
    \RemoveEmptyStaves
  } {
    \new Voice = "sopranoBridgeVoice" {
      \bridgeSoprano
      \break
    }
  }

  \new Lyrics = "bridgeSopranoLyrics" {
    \lyricsto "sopranoBridgeVoice" {
      \bridgeSopranoText
    }
  }

  \new Staff \with {
    \RemoveEmptyStaves
  } {
    \new Voice = "altoBridgeVoice" {
      \bridgeAlto
    }
  }

  \new Lyrics = "bridgeAltoLyrics" {
    \lyricsto "altoBridgeVoice" {
      \bridgeAltoText
    }
  }

  \new Staff \with {
    \RemoveEmptyStaves
  } {
    \new Voice = "baritoneBridgeVoice" {
      \bridgeBaritone
    }
  }

  \new Lyrics {
    \lyricsto "baritoneBridgeVoice" {
      \bridgeBaritoneText
    }
  }

  \new Staff \with {
    \RemoveEmptyStaves
  } {
    \new Voice = "tenorBridgeVoice" {
      \bridgeTenor
    }
  }

  \new Lyrics {
    \lyricsto "tenorBridgeVoice" {
      \bridgeTenorText
    }
  }
>>

chorusFinal = \context ChoirStaff <<
  \context ChordNames {
    \chorusChords
  }

  \new Staff {
    \new Voice = "sopranoChorusVoice" {
      \chorusSoprano
    }
  }

  \new Lyrics = "chorusLyrics" {
    \lyricsto "sopranoChorusVoice" {
      \chorusText
    }
  }

  \new Staff {
    <<
      \new Voice = "baritoneChorusVoice" {
        \voiceOne
        \chorusBaritone
      }
      \new Voice = "tenorChorusVoice" {
        \voiceTwo
        \chorusTenor
      }
    >>
  }
>>

fullScore = \score {
  {
    \verseOne
    \prechorusOne
    \chorusOne
    \verseTwo
    \prechorusTwo
    \chorusTwo
    \bridge
    \chorusFinal
  }
  \layout {
  }
}

\book {
  \header {
    title = "Bad extent estimation example"
  }
  \fullScore
  \paper {
%    annotate-spacing = ##t
%    systems-per-page = #9
%    page-count = #5
%    page-breaking = #ly:minimal-breaking
  }
}