Vertically aligning ossias and lyrics

This snippet demonstrates the use of the context properties alignBelowContext and alignAboveContext to control the positioning of lyrics and ossias.

\version "2.24"

\relative c' <<
  \new Staff = "1" { c4 c c c }
  \new Staff = "2" { d4 d d d }
  \new Staff = "3" { e4 e e e }

  { \skip 2
    <<
      \lyrics {
        \set alignBelowContext = "1"
        lyrics4 below
      }
      \new Staff \with {
        alignAboveContext = "3"
        fontSize = -2
        \override StaffSymbol.staff-space = #(magstep -2)
        \remove "Time_signature_engraver"
        \override VerticalAxisGroup.staff-staff-spacing =
           #'((minimum-distance . 0)
              (basic-distance . 0)
              (padding . 1))
      } {
        \tuplet 6/4 {
          \override TextScript.padding = 2
          c8[^"ossia above" d e d e f]
        }
      }
    >>
  }
>>