Re: Engraving chords with the same note twice, but different accidentals

[Charlie Volow]

Hi Knute,

Speaking as a keyboard player (and lilypond novice) I would recommend re-spelling the a flat as a g sharp! Sometimes, theory has to take a backseat to readability. If the a natural is supposed to sound before the a flat, I might write that one as a grace note to an arpeggiated dyad. That said, I’ll let someone else give an answer that more specifically answers what you’re hoping to achieve :)

Best,

Charlie

On Thu, Feb 3, 2022 at 10:14 Knute Snortum <ksnortum@gmail.com> wrote:

Hi everyone,

I've run into a situation where I need to engrave a chord that has the
same note twice, but with different accidentals.  Like this (third
chord):

%%%
\version "2.22.1"
\language "english"

\relative {
  \key ef \major
  \time 3/4
  <bf' af' f'>8-.\arpeggio <bf af' bf>\arpeggio( <bf af'! a>\arpeggio
    <bf af' bf>\arpeggio <bf af' c>\arpeggio <bf af' bf>\arpeggio) |
}
%%%

I have a screenshot of the "default" way that LilyPond engraves this
attached ("default" in the sense that I only placed a bang after the
af).  Keyboard players: would you be able to sight read this quickly?
Is there a different way that would be better, like the second
attachment?

To get that "y-stem" in LP, the snippets say to do this:

%%%
\version "2.22.1"

fixA = {
  \once \override Stem.length = #11
}

fixB = {
  \once \override NoteHead.X-offset = #1.7
  \once \override Stem.length = #7
  \once \override Stem.rotation = #'(45 0 0)
  \once \override Stem.extra-offset = #'(-0.1 . -0.2)
  \once \override Flag.style = #'no-flag
  \once \override Accidental.extra-offset = #'(4 . -.1)
}

\relative c' {
  << { \fixA <b d!>8 } \\ { \voiceThree \fixB dis } >> s
}
%%%

But my problem with that is I can't get the beam to "attach" to the
notes in other voices.

To sum up: a) what's the best way to engrave this kind of chord, and
b) how do I do it?  I appreciate any feedback you can give me.

--
Knute Snortum