Re: Aligning lyrics to an invisible Voice

[Martial]

 One suggestions,
%--------------------------------------------------------------
\version "2.6.4"
upper = \transpose c c' { \time 3/4  c4 e g | c e g | c e g }
lower = \transpose c c { \time 3/4  c2. | c | c }

%Change here
Invisible  =  { \hideNotes \time 3/4   c4 c c | c4. c8 c4 | c2. |}

verseOne = \lyricmode { One two three | four and six | seven }
verseTwo = \lyricmode { Eight nine ten | e -- le -- ven | twelve }

\score {
    \context PianoStaff <<

   %Change here
   \context Staff  = lyricsRhythm
       \with {
           \remove Time_signature_engraver
           \remove Key_engraver
           \remove Clef_engraver
           \remove Staff_symbol_engraver
       } \context Voice = "lyricsRhythm" \Invisible
      \lyricsto "lyricsRhythm" \new Lyrics \verseOne
      \lyricsto "lyricsRhythm" \new Lyrics \verseTwo


      \context Staff = upper \upper
      \context Staff = lower \lower
    >>
    \layout { }
}
%-----------------------------------------------------

--
Martial
http://cathemline.org