Re: effect of \transposition on \quoteDuring

[Paul Scott]

On 05/25/2011 01:12 PM, Keith OHara wrote:
> Paul Scott<waterhorse<at>  ultrasw.com>  writes:
>
> > Why does the presence of \transposition change the effects of the
> > following pairs of lines?  Or how do I get the results I want when I add
> > the desired \transposition command?
>
> > notesA = \relative c'' {
> >     \transposition c'
> >     c1 d e f g
> > }
> > \addQuote "inA" \notesA
> > \addQuote "inAd" \transpose c c, \notesA
> The \transpose operation changes *all* the pitches in \notesA, including the c'
> that tells LilyPond what the instrument \transposition is.
>
> (\transpose really should not change this pitch, and there is a bug listed about
> this. http://code.google.com/p/lilypond/issues/detail?id=754)

Ok.  So when and if the bug is fixed the ability to write a theme in one 
instrument and quote it for any other instruments which play it at the 
same time in whatever will be available!?

> The effect is that \transpose will change the written pitches, but leave the
> sounding pitches the same.  Quotes with \quoteDuring use the sounding pitches.
>
> I do not know a way to do what you want with \quoteDuring.

Again from what you say shouldn't fixing the bug solve the problem?

>   (I just use
> variables to hold short motives instead.)

Yes, that's what I've done for years until I recently got comfortable 
with \quoteDuring and whenever the theme occurs again at some other time 
or in some other key.

>   A similar issue must have been
> handled to make the function \transposedCueDuring, so that might serve as a
> model if any Scheme programmer (as many users seem to be) wants to find a
> solution.

Maybe I will have time to do this this summer.  This seems to me to be a 
required cousin of \quoteDuring.

Thanks,

Paul