Staff brackets

Staffs can be nested in various combinations. Here, StaffGroup and ChoirStaff produce similar straight brackets, whereas GrandStaff produces curly brackets. In InnerStaffGroup and InnerChoirStaff, the brackets are shifted leftwards.

\version "2.24"

%% http://lsr.di.unimi.it/LSR/Item?id=137

myMusic = { c' d' e' f' }

\score { 
  <<
    \new StaffGroup << 
      \new Staff \myMusic
      \new StaffGroup <<
        \new Staff \myMusic
        \new GrandStaff <<
          \new Staff \myMusic
          \new Staff \myMusic
        >>
        \new Staff \myMusic
      >>
      \new ChoirStaff <<
        \new Staff \myMusic
        \new StaffGroup <<
          \new Staff \myMusic
        >>
        \new Staff \myMusic
      >>
    >>
    \new ChoirStaff << 
      \new Staff \myMusic
      \new ChoirStaff <<
        \new Staff \myMusic
        \new Staff \myMusic
      >>
      \new Staff \myMusic
    >>
  >>
  \layout { 
    raggedright = ##t 
  }
}