2 Voices | 1 Staff | Mensuration Lines | Lyrics

[Johannes Roeßler]

Hi Group,

me again - I try to combine a few things I've learned - but fail.

I would like to have mensuration lines (using the example from here: https://lilypond.org/doc/v2.22/Documentation/notation/working-with-ancient-music_002d_002dscenarios-and-solutions)
but I also need to have two voices in one staff.

This is what I've tried:

#########################

\version "2.24.0"
global = {
  \hide Staff.BarLine
  s1 s
  \undo \hide Staff.BarLine
  \bar "|."
}

sopI = \relative c'' {
  c1 c
}

sopII = \relative c' {
  f1 f
}

bass = \relative c'' {
  c1 c
}

words = \lyricmode {
  la la
}

\new StaffGroup
<<
  \new Staff {
    \voices 1,2<< \global \sopI \sopII >>
  }
  \lyricsto "2" { \words }

  \new Staff { << \global  \bass >> }
>>

################

I'm sure "\global" is not in the right position - but I still do not understand enough of the concept to figure out, where to place it

Cheers
Joei