\score {
  \header {
    title = "Von guten Mächten"
    composer = "Melodie: S. Fiertz (1970)"
    arranger = "Satz: H. Brand (1996)"
    poet = "Text: D. Bonhoefer (1944)"
  }
  \new ChoirStaff <<
    \set Score.skipBars = ##t
    \new Staff <<
      \new Voice = frauen  { \global \oneVoice \pausen }
      \new Voice = sopran  { \global \voiceOne \sopranMelodie }
      \new Voice = alt     { \global \voiceTwo \altMelodie }
    >>
    ifdef(`STR_1',`\new Lyrics \lyricsto sopran { \textI }')
    ifdef(`STR_2',`\new Lyrics \lyricsto sopran { \textII }')
    ifdef(`STR_3',`\new Lyrics \lyricsto sopran { \textIII }')
    \new Staff <<
      \new Voice = maenner { \clef "bass" \global \oneVoice \pausen }
      \new Voice = tenor   { \clef "bass" \global \voiceOne \tenorMelodie }
      \new Voice = bass    { \clef "bass" \global \voiceTwo \bassMelodie }
    >>
  >>
  \layout {
    indent = #0
  }
}