2017-01-30 19:16 GMT+01:00 Mojca Miklavec <mojca.miklavec.li...@gmail.com>:
> Hi,
>
> I can easily use a macro to create chords of predefined lengths, say
>
> chord_F = { <f a c'>4 }
>
> but the functionality is limited for what I want to achieve.
>
> On some instruments (like accordion) one gets that chord by pressing a
> single button and I need some reasonable way to enter them without
> messing everything up.
>
> (Some songs consist of only two different chords and I find it tedious
> to keep entering <f a c'> <e g c'> over and over again, making lots of
> mistakes, if I could assign that to just "F" and "C" or numbers 4 and
> 2. \somelongwordF and \somelongwordC are still better than writing out
> the full chord; the compiler would catch it if I make a spelling
> mistake.)
>
> What I would like to be able to do is:
>
> - specify lengths
> \chord_F4 \chord_F2 or <\chord_F>4 <\chord_F>2
>
> - combine chords with other pitches (in theory perhaps with other
> chords as well, but I never needed that so far)
> <f, \chord_F>8
>
>
> To get things like
>
> chord_F = { f a c' }
> melody = {
> f,8 <\chord_F>8 c8 <\chord_F>8 |
> <f, \chord_F>2
> }
>
> What options do I have to achieve the desired functionality? (I don't
> care about the exact syntax as long as it would allow me to achieve
> consistency.)
>
>
> Thank you very much,
> Mojca
>
> (Please CC me.)
How about:
\version "2.19.52"
chord =
#(define-music-function (mus dur)(ly:music? ly:duration?)
(let ((evc-notes (extract-typed-music mus 'note-event)))
(for-each
(lambda (note-ev)
(ly:music-set-property! note-ev 'duration dur))
evc-notes)
(make-event-chord evc-notes)))
chord_F = \chord <f a c'> \etc
chord_Gm = \chord <g' bes' d''> \etc
{
\set Score.skipBars = ##t
\chord_F16 \chord_F1 \chord_F32.. \chord_F\longa
\chord_Gm128 \chord_Gm2 \chord_Gm4
<< f''8 \\ \repeat unfold 3 \chord_F16*2/3 >>
}
%% remark:
%% n.b.: \chord_F4 <-- a duration is needed, the value doesn't matter
chord_XY = \chord { fis'' \chord_F1 } \etc
{
\chord_XY 64.
\chord { gis'' \transpose f f' \chord_F4 ees } 32
}
The following I don't understand.
Not playing accordion, though
>
> PS: At some point in the future I would ideally like to be able to
> prepare single input to get both of the following modes as output (but
> that's already the next step):
>
> \new Staff = "staff" <<
> \new Voice = "bass" {
> \clef bass
> \repeat unfold 3 { f,8 <f a c'> c, <f a c'> | } % push mode
> \repeat unfold 4 { g,8 <e g c'> c, <e g c'> | } % pull mode
> <f, f a c'>2 | % push mode
> }
> >>
>
> \new FiguredBass {
> \figuremode {
> \repeat unfold 3 { <4>8 <3> <2> <3> | } % push mode
> \repeat unfold 4 { <2>8 <3> <4> <3> | } % pull mode
> <4 3>2 | % push mode
> }
> }
Cheers,
Harm
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