Re: Arpeggio across notes of differing lengths

[Robin Bannister]

Joel C. Salomon wrote:
> In the score to Peter Pan I’ve come across what appears to be an
> arpeggio with notes of different lengths.

This corresponds to the example
'Creating arpeggios across notes in different voices'
in NR 1.3.3.
http://lilypond.org/doc/v2.19/Documentation/notation/expressive-marks-as-lines#arpeggio

but unfortunately its says further down
'The simple way of setting parenthesis-style arpeggio brackets does not 
work for cross-staff arpeggios'


This is because \arpeggioParenthesis assumes you are inside just one 
Voice, and so is ineffective for PianoStaff and even just Staff.
So you must do what it does, but for Staff, e.g.


\new Staff \with {
  \consists "Span_arpeggio_engraver"
}
\relative c' {
  \set Staff.connectArpeggios = ##t
  \once \override Staff.Arpeggio.stencil = #ly:arpeggio::brew-chord-slur
  \once \override Staff.Arpeggio.X-extent = #ly:grob::stencil-width
  <<
    { <e' g>4\arpeggio <d f> <d f>2 }
    \\
    { <d, f>2\arpeggio <g b>2 }
  >>
}


Cheers,
Robin

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