Joel Ebel <jbe...@mybox.org> writes:
> Hi. I'm curious if there's a way to re-use a variable containing
> chords entered in \chordmode to create strumming patterns with
> Pitch_squash_engraver and \improvisationOn. I like only having to
> enter the chords once, so if I change something, I only need to do it
> in one place, and I also would like the strumming patterns in the midi
> output. But the issue is that handing multiple notes to the
> Pitch_squash_engraver gives it a double note-head. Is there a way to
> maybe extract the root of the chord, or get a single head from the
> Pitch_squash_engraver?
>
> Thanks!
> Joel
>
> Example:
>
> \version "2.19.25"
>
> chordNames = \chordmode {
> c4 c8 c~ c c c c
> g4 g8 g~ g g g g
>
> }
>
> <<
> \new ChordNames {
> \set chordChanges = ##t
> \chordNames }
> \new Voice \with {
> \consists "Pitch_squash_engraver"
> } { \improvisationOn
> % Would like some option here like:
> % \chordRoot
> \chordNames
> }
>>>
Try
chordRoot =
#(define-music-function (m) (ly:music?) (event-chord-reduce m))
I don't like the name. Once we come up with a nice bike shed color, we
probably should provide that function in LilyPond proper and document it
along with Pitch_squash_engraver.
--
David Kastrup
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