Johan Vromans <[email protected]> writes:
> On Mon, 21 Sep 2015 11:00:13 +0200
> David Kastrup <[email protected]> wrote:
>
>> Johan Vromans <[email protected]> writes:
>> > It is easy to instruct LilyPond that a chord of form <c ees g> must be
>> > shown as minor (e.g., Cm), but can I do the other way around? E.g.,
>> > define a 'foo' so that X:foo means <c eis g> or whatever notes I want?
>>
>> Possible but obscure. Take a look at the \powerChords command which
>> does exactly that (but should be the default in my opinion as the
>> behavior without it is not useful).
>
> Maybe I do not get the full meaning of \powerChords, but all it seems to do
> is print the chord name for a:1.5 as A5. What I was looking for is a way to
> define that, for example,
>
> a:five -> <a e> -> A5
>
> So it is the *input* side I'd want to change.
Ah, ok.
It would be something like
#(set!
default-chord-modifier-list
(acons 'five (lambda (pitches)
(remove-step (pitch-step (ly:make-pitch 0 2 0)) pitches))
default-chord-modifier-list))
to do that. Again in the "possible but obscure" ballpark. And you
probably need to pull in the definitions of remove-step and pitch-step
from scm/chord-ignatzek-names as well.
--
David Kastrup
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