> > I'm not sure though - does the same thing happen in \chords mode?
> > What if one tries, say, ees:m7 and dis:m7?
>
> Yes - compare des:dim7 with cis:dim7 - one has double-flats, which
> presumably means something like (x . -2) in chord-names.scm,
> and the other doesn't.
I'm not sure what the problem is--the Dbo7 has double flats because this
example is typeset in the key of C (try it in Db!). The C#o7 doesn't have
double flats for the same reason. The interval between the C# and the Bb is
still a major sixth (or dimished 7th if you like). Admittedly, the notation
may look a little strange, but it's a lot clearer than the alternatives (and
you can find examples of this in the classical literature)!
You're right, the chords.cc uses musical_pitch but the chord-names.scm uses
intervals. The lesson here is that if you want lily to typeset *exactly*
what you want, you have to use \chords mode...
-- Shamus
BTW, if you have suggestions for how the more esoteric chords (I'm thinking
altered 9th, 11th & 13th chords) should be notated, let me know so I can add
them in!
chords.png
chords.png