\new Voice = "sopranos" @{ \global \sopranoMusic @}
>>
\new Lyrics \lyricsto "sopranos" @{ \sopranoWords @}
\new Staff = "altos" <<
\new Voice = "sopranos" @{ \global \sopranoMusic @}
>>
\new Lyrics \lyricsto "sopranos" @{ \sopranoWords @}
\new Staff = "altos" <<