Re: Double-flats used by Lilypond after transpose

[Cameron Horsburgh]

On Wed, Aug 01, 2007 at 10:20:53AM +0000, Jon wrote:
> Hi there guys,
> 
> I've been writing out a part for B-flat sax. I've written out the music in 
> concert pitch and so am using \transpose to display it in the right key for 
> the 
> B-flat sax. The part I'm writing is in E-major when in concert pitch, so this 
> becomes G-flat-major when transposed for the B-flat instrument. 
> 
> The problem I'm having is that Lilypond is choosing to use double flats for a 
> number of particular notes when it prints out the B-flat part. For example, 
> if 
> I write a G or an F in the concert part (which is in E-major) these get 
> written 
> out as B-doubleflat and A-doubleflat respectively, in the B-flat instrument 
> part, instead of as A-natural and G-natural, which would be easier to read in 
> my opinion.
> 

The other option would be to transpose the piece into F-sharp major, which
would (I presume) get rid of the double accidentals and be more
(technically) correct.

However, there seems to be a (rather complex) way to do it: have a look at
http://lilypond.org/doc/v2.11/Documentation/user/lilypond/source/input/lsr/scheme/lily-0934c4d641.ly
for clues (I haven't had a good look at this, but I think it does whayt
you're after.)

Hope this helps!

-- 

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Cameron Horsburgh

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