\score {
  \header {
    title = "ifdef(`_D',`Wer kann segeln') ifdef(`_DS',` - ') ifdef(`_S',`Vem kan segla')"
    poet = "Text und Melodie: Norwegen"
    composer = "Satz: Gunnar Erikson"
  }
  \new ChoirStaff <<
    \set Score.skipBars = ##t
    \new Staff <<
      \new Voice = sopran    { \global \voiceOne \sopranMelodie }
      \new Voice = alt       { \global \voiceTwo \altMelodie }
    >>
    ifdef(`STR_1',`\new Lyrics \lyricsto alt { \textFrauenDI }')
    ifdef(`STR_1S',`\new Lyrics \lyricsto alt { \textFrauenNI }')
    ifdef(`STR_2',`\new Lyrics \lyricsto alt { \textFrauenDII }')
    ifdef(`STR_2S',`\new Lyrics \lyricsto alt { \textFrauenNII }')
    \new Lyrics = tenorText { }
    \new Staff <<
      \new Voice = maenner   { \clef "bass" \global \oneVoice \maennerMelodie }
    >>
    ifdef(`STR_1',`\new Lyrics \lyricsto maenner { \textMaennerDI }')
    ifdef(`STR_1S',`\new Lyrics \lyricsto maenner { \textMaennerNI }')
    ifdef(`STR_2',`\new Lyrics \lyricsto maenner { \textMaennerDII }')
    ifdef(`STR_2S',`\new Lyrics \lyricsto maenner { \textMaennerNII }')
  >>
  \layout {
    indent = #0
  }
}