\version "2.19.80"
\language "english"

\include "oll-core/package.ily"
\loadPackage edition-engraver

\addEdition test

%When the voice with the \clef F is created explicitly, sub-voices appear to be inaccessible on the first note of the first bar
\editionMod test 1 0/4 Piano.LH.Voice.B { \once \override NoteHead.color = #green }
\editionMod test 1 0/4 Piano.LH.Voice.C { \once \override NoteHead.color = #green }
%Yet they are accessible later
\editionMod test 1 1/8 Piano.LH.Voice.B { \once \override NoteHead.color = #green }
\editionMod test 1 2/4 Piano.LH.Voice.C { \once \override NoteHead.color = #green }

\consistToContexts #edition-engraver Score.PianoStaff.Staff.Voice

\score {
  \new PianoStaff \with { \editionID Piano } <<
    \new Staff \with { \editionID RH } <<
      \new Voice = "RH_A" \relative c'' { \voiceOne c4. d8 d4. g8 | e4.( d8 c b g4) }
      \new Voice = "RH_B" \relative c'' { \voiceTwo a2. g4~ | g f2 e4 | }
    >>
    \new Dynamics { s1\mp }
    \new Staff \with { \editionID LH } {
      \new Voice = "Implied" { 
        \clef F <<
          \new Voice = "LH_A" \relative c' { \clef F \voiceOne e8 d c4  d8 c b4 | c8 b a2 g4 }
          \new Voice = "LH_B" \relative c { \voiceTwo f2 e | d g,4 c | }
        >> 
      } 
    }
  >>
}