On Jun 9, 2010, at 3:07 AM, snozpacker wrote:
For a certain polytonal piece, I need to display chord names of the
form
"C7/F#7". That is, I need to be able to have an entire chord after
the
slash, not just the root.
I already know how to modify the main part of the chord using
chExceptionMusic, like in the example code below. But I can't
figure out
how to use this to modify the part after the slash.
If I only had to do this once, I suppose I could just take one type
of chord
that I didn't need, hard code it as C7/F#7 in chExceptionMusic, and
call it
in \chords whenever I needed it. But I have to do it for many
different
chords.
What is the correct way to do this?
I don't know that there is a way to enter polychords into Lilypond,
but by some conventions at least you don't want to display them as a
slash chord (e.g., triad/triad) but above each other separated by a
horizontal line.
C C7
- or -
A F#7
Polychords are usually triads over triads rather than tetrads over
tetrads, although your needs might be different. It might be easier
to write the exception using triads using a horizontal line rather
than a slash to specify them as polychords.
Hopefully someone else will know how to code these; you may have to
write a Scheme function to do this (and if you succeed, submit it to
be included!). There was discussion on this about a year ago with no
resolution, IIRC.
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