Als alles duister is

\version "2.24.1"

\paper {
  #(set-paper-size "letter") % Without this line paper size defaults to a4
  top-margin = 0.3\in
  left-margin = 0.3\in
  right-margin = 0.3\in  
  bottom-margin = 0.3\in
  
  two-sided = ##f % set to true for hole-punched copies
  inner-margin = 0.4\in
  outer-margin = 0.4\in
  binding-offset = 0.2\in
  
  #(define fonts
     (make-pango-font-tree
      "Perpetua"
      "Arial Narrow"
      "Alex Brush"
      (/ staff-height pt 20)))
}

\header {}

MergeRests = { 
}

global = {
  \key g\major
  \numericTimeSignature
  \time 4/4
  \tempo 4=64
  \MergeRests
  \set Timing.beamExceptions = #'()
  \set Timing.baseMoment = #(ly:make-moment 1/4)
  \set Timing.beatStructure = #'(1 1 1 1)
  \partial 8*5
}


soprano = \relative c'' { \global 
   dis,8 dis dis cis dis \repeat volta 2 {\bar "[|:" | e4.
   e8 e4 e8 fis | g fis e fis g4 a | b8 b b b c4 b | a r8
   b8 b a g fis | e4.
   e8 e4 e8 fis | dis dis dis dis e4 fis | dis8 dis dis dis e4 fis | dis r8
   dis8 dis dis cis dis |
   \bar ":|]"}
}
alto = \relative c' { \global 
   b8 b b b b \repeat volta 2 { | b4.
   b8 b4 b8 b | e e e e e4 fis | g8 g g g g4 g | fis r8
   g8 g fis e d | c4.
   c8 c4 c8 c | b8 b b b b4 b | b8 b b b b4 c | b r8
   b8 b b b b }
}
tenor = \relative c' { \global
   fis,8 fis fis e fis \repeat volta 2 { | g4.
   g8 g4 g8 a | b a g a b4 d | d8 d d d e4 d | d r8
   d8 d d b a | g4.
   g8 g4 g8 a | fis fis  fis fis g4 a | fis8 fis fis fis g4 a | fis4 r8
   fis8 fis fis e fis }
}
bass = \relative c { \global
   b8 b b b b \repeat volta 2 { | e4.
   e8 e4 e8 e e e e e e4 d | g8 g g g <c c,>4 g | d r8
   g8 g d e b | c4.
   c8 c4 c8 a | b b b b e4 a, | b8 b b b e4 a, | b r8
   b8 b b b b }
   
}
verse = \lyricmode { 
  Als al -- les dui -- ster is,
  ont -- steek dan een lich -- tend vuur dat nooit meer dooft, een vuur dat nooit meer dooft.
  als al -- les dui -- ster is,
  ont -- steek dan een lich -- tend vuur dat nooit meer dooft, een vuur dat nooit meer dooft.
  Als al -- les dui -- ster
}

% Function that allows the creation of MIDI rehearsal files
rehearsalMidi = #
(define-music-function
 (parser location name midiInstrument lyrics) (string? string? ly:music?)
 #{
   \unfoldRepeats <<
     \new Staff = "soprano" \new Voice = "soprano" { s1*0\f \soprano }
     \new Staff = "alto" \new Voice = "alto" { s1*0\f \alto }
     \new Staff = "tenor" \new Voice = "tenor" { s1*0\f \tenor }
     \new Staff = "bass" \new Voice = "bass" { s1*0\f \bass }
     \context Staff = $name {
       \set Score.midiMinimumVolume = #0.5
       \set Score.midiMaximumVolume = #0.5
       \set Score.tempoWholesPerMinute = #(ly:make-moment 100 4)
       \set Staff.midiMinimumVolume = #0.8
       \set Staff.midiMaximumVolume = #1.0
       \set Staff.midiInstrument = $midiInstrument
     }
     \new Lyrics \with {
       alignBelowContext = $name
     } \lyricsto $name $lyrics
   >>
 #})

choirPart = \new ChoirStaff 
<<
  \new Staff \with {
    midiInstrument = "choir aahs"
    instrumentName = \markup \center-column { "Soprano" "Alto" }
    shortInstrumentName = \markup \center-column { "S." "A." }
  }
  << 
    \new Voice = "soprano" 
    { \voiceOne \soprano } 
    
    \new Voice = "alto" 
    { \voiceTwo \alto } 
  >>
  \new Lyrics \with {
    %\override VerticalAxisGroup #'staff-affinity = #CENTER
  } \lyricsto "soprano" \verse 
  
  \new Staff \with {
    midiInstrument = "choir aahs"
    instrumentName = \markup \center-column { "Tenor" "Bass" }
    shortInstrumentName = \markup \center-column { "T." "B." }
  }
  << 
    \clef bass
    \new Voice = "tenor" 
    { \voiceOne \tenor } 
    
    \new Voice = "bass" 
    { \voiceTwo \bass } 
  >>
>> 


\score {
  <<
    \new ChordNames {
      \chordmode {
        \set noChordSymbol = ""
        \partial 8*5 r8 r r r r \repeat volta 2 { | e1:m | e2.:m d4 | d2 c4 g | d2
        g8 d e:m b:m | c1 | b2 e4:m a:m6 | b2 e4:m a:m6 | b1 }
      }
    }
  \choirPart
  >>
  \layout{}
}

% This section is used to add context to the rehearsal parts
choirPartMIDI = \new ChoirStaff 
<<
  \new Staff \with {
    midiInstrument = "choir aahs"
    midiMaximumVolume = 0.5
    midiMinimumVolume = 0.3
  }
  << 
    \new Voice = "soprano" 
    { \voiceOne \soprano } 
    
    \new Voice = "alto" 
    { \voiceTwo \alto } 
  >>
  
  \new Staff \with {
    midiInstrument = "choir aahs"
    midiMaximumVolume = 0.5
    midiMinimumVolume = 0.3
  }
  << 
    \clef bass
    \new Voice = "tenor" 
    { \voiceOne \tenor } 
    
    \new Voice = "bass" 
    { \voiceTwo \bass } 
  >>
>> 

% Rehearsal MIDI files:

\score {
  \choirPart
  \midi{}
}
\book {
  \bookOutputSuffix "soprano"
  \score {
    <<
      \rehearsalMidi "soprano" "soprano sax" \verse
      
      % comment out the following lines if you want the part by itself
      \choirPartMIDI
    >>
    \midi { }
  }
}

\book {
  \bookOutputSuffix "alto"
  \score {
    <<
      \rehearsalMidi "alto" "soprano sax" \verse
      
      % comment out the following lines if you want the part by itself
      \choirPartMIDI
    >>
    \midi { }
  }
}

\book {
  \bookOutputSuffix "tenor"
  \score {
    <<
      \rehearsalMidi "tenor" "tenor sax" \verse
      
      % comment out the following lines if you want the part by itself
      \choirPartMIDI
    >>
    \midi { }
  }
}

\book {
  \bookOutputSuffix "bass"
  \score {
    <<
      \rehearsalMidi "bass" "tenor sax" \verse
      
      % comment out the following lines if you want the part by itself
      \choirPartMIDI
    >>
    \midi { }
  }
}