Re: Lilypond and Jazz chords

[Robert Schmaus]

Hi Kieren and Ponders,

> I’m very detail-oriented, so things that others might consider “little” often 
> drive me quite crazy.  =)

Well, "little" is the wrong expression - "not painful enough to invest 
the time" is closer to the truth.


> > Quite possibly that is easy to fix though
>
> Should be.

Turns out, it isn't that easy to fix, for me anyway. Maybe anyone can 
point me in the right direction ...

I checked the code of my jazz-include files, and this is where the 
chords are being defined:

chJazzMusic = {
  < c ees ges > -\markup \super #"o"
  < c d g >  -\markup \super #"sus2"
  < c f g >  -\markup \super #"sus4"

  % etc
}

chJazz = #(append (sequential-music-to-chord-exceptions chJazzMusic #t))

\layout {
  \context {
    \Score
    chordNameExceptions = #chJazz
    \override ChordName.font-size = #4
    \override ChordName.font-name = #"LilyJAZZText"
  }
}

Now, I assumed that I had to do something about the accidentals in that 
\context block, but apparently it's not that easy.

I checked this example from the LSR
http://lsr.di.unimi.it/LSR/Snippet?id=750
and I think, what I need to do is to set the chordRootNamer in that 
\context block. There even is a chord namer routine in my include file 
which looks like this:

#(define (chordNamer pitch)
        (let* ((alt (ly:pitch-alteration pitch)))
                (make-line-markup
                 (list
                  (make-simple-markup
                   (vector-ref #("C" "D" "E" "F" "G" "A" "B")
                        (ly:pitch-notename pitch)))
                  (if (= alt 0) ; alteration?
                      (markup "") ; ... nope
                      (if (= alt FLAT) ; ... otherwise
                          (markup #:smaller #:flat ) ; flat
                          (markup #:smaller #:sharp ) ; ... or sharp
                          )
                      )
                  )
                 )
                )
        )

That's what I need to change and use but right now, that code is not 
even called.
I think I need to add something like

chordRootNamer = #chordNamer

to the \context block but that doesn't work, it throws this error:

Interpreting music...[8][16]/Applications/Lilypond/v19/LilyPond 
2.19.18.app/Contents/Resources/share/lilypond/current/scm/chord-ignatzek-names.scm:212:9: 
In procedure chordNamer in expression (name-root root lowercase-root?):
/Applications/Lilypond/v19/LilyPond 
2.19.18.app/Contents/Resources/share/lilypond/current/scm/chord-ignatzek-names.scm:212:9: 
Wrong number of arguments to #<procedure chordNamer (pitch)>
Exited with return code 1.

I don't really know what to change here ... can anyone give me directions?

Thanks,
Robert



> > LilyJazz […] does provide output that is superbly readable even in shady, dim 
> > conditions.
>
> Agreed.
>
> Cheers,
> Kieren.
> ________________________________
>
> Kieren MacMillan, composer
> ‣ website: www.kierenmacmillan.info
> ‣ email: address@hidden