Re: Question regarding ChordNames

[John Helly]

    Well, that approach won't handle G to C#.  I still get Db with no
    alternative.
    J

On 3/12/24 19:02, John Helly wrote:

M.

Prompted by your idea, I could do the equivalent with a short bash script to edit selected chords to be the appropriate enharmonic form anticipating the transpose.

Mahalo.

On 3/12/24 18:48, John Helly wrote:

Mahalo, that's an interesting approach.  Maybe something in that vein would do it.  I'll experiment.

However, I have a whole song that has a lot of chromatic chord changes and I suspect it'll be a 'fix one, break one' situation.  I'd like to find a general solution or some way to make a specialized chord library for a song.

If there's no LP solution then I'll have to figure out plan B.

J.

On 3/12/24 18:22, Michael Werner wrote:

Hi John,

On Tue, Mar 12, 2024 at 11:51 PM John Helly <hellyj@ucsd.edu> wrote:

Aloha.

Here's an MWE to exhibit the issue. 

I have a flat note (bes) that I want to transpose down 4 half-tones to F#.  However, when the transpose is applied, the result is Gb.  I understand that a flat note was the initial value so maybe LP is preserving that specification? 

Nonetheless, short of re-writing the whole piece in A rather than C#, is there a way to specify the enharmonic representation for an F# rather than Gb, for example?

It's maybe a bit hackish, but what about first transposing from B flat to A sharp. *then* transposing C sharp to A? Something like:

\version "2.25.13"

bflat = \chordmode { bes1 }

{
  \transpose cis' a {
    \new ChordNames {
      \bflat
      \transpose bes ais { \bflat }
    }
  }
}
--

Michael

-- 
John Helly / San Diego Supercomputer Center / Scripps Institution of Oceanography 
https://www.sdsc.edu/~hellyj / 808 205 9882 / 760 8408660

-- 
John Helly / San Diego Supercomputer Center / Scripps Institution of Oceanography 
https://www.sdsc.edu/~hellyj / 808 205 9882 / 760 8408660

-- 
John Helly / San Diego Supercomputer Center / Scripps Institution of Oceanography 
https://www.sdsc.edu/~hellyj / 808 205 9882 / 760 8408660