Re: Ties across voices

[Simon Albrecht]

On 11.12.2016 19:01, Peter Toye wrote:
> Ties across voices I want to engrave some piano music which includes 
> the attached fragment. As I understand it I need a single voice for 
> the first chord, but two for the second. But the ties can't extend 
> across voices.

This is exactly the situation for which \hideNotes exists. The following 
works perfectly:

\version "2.18.2"
\language "english"
\score {
  <<
    \clef "treble"
    {
      \oneVoice
      <a' c'' f''^~ a''~>4
      \voiceOne
      <f'' a''>8[ <c'' f''> a'' g'']
    }
    \\
    {
      \voiceTwo
      \hideNotes
      \override NoteColumn.ignore-collision = ##t
      <a' c''>4 _~
      \unHideNotes
      \override NoteColumn.ignore-collision = ##f
      <a' c''> <g' d''>
    }
  >>
}

Best, Simon