\version "2.14.2"

\include "english.ly"

songGlobalsIntro = {
  \time 6/8
  \partial 8 s8 | s4. s4
}

songGlobalsVerse = {
  s8 |
  \once \override TimeSignature #'stencil = ##f
  \time 6/8
  % \once \override TimeSignature #'stencil = ##f
  % \override Staff.TimeSignature #'transparent = ##t
  s2. | \bar "||"
}

songGlobalsChorus = {
  \time 4/4
  % \override Staff.TimeSignature #'transparent = ##f
  s2. s8
}

songTacetIntro = {
  \partial 8 r8 | r4. r4
}

songMelodyVerse = \relative c' {
  c8 | c'4.~ c8 r4 |
}

songMelodyChorus = \relative c' {
  c2. r8
}

songVocals = \new Staff <<
  \clef treble
  <<
    {
      \songGlobalsIntro
      \repeat volta 6 {
        \songGlobalsVerse
        \songGlobalsChorus
      }
    }
    \new Voice = "vocal" {
      \songTacetIntro
      \repeat volta 6 {
        \songMelodyVerse
        \songMelodyChorus
      }
    }
  >>
>>

\score {
  <<
    \songVocals
  >>
  \layout {}
}

\score {
  \unfoldRepeats
  <<
    \songVocals
  >>
  \midi {}
}