On May 14, 2009, at 1:03 AM, Marc Hohl wrote:
Tim McNamara schrieb:
[...]
In jazz lead sheets, the usual method is to write "N.C." above the
staff ("No Chord") which cues the chordal instruments and rhythm
section to stop playing to allow the break. There's a workaround
that Martial wrote to facilitate this, but it would be nice to
have a way of writing this more simply (e.g., nc+duration such as
nc1, nc2, nc4, nc8 etc.).
What about writing just r1, r2, r4 as usual, and let lilypond
convert this into "N.C."?
I have no perfect solution, but it should be possible by including
the Rest_engraver and defining it
to simply print the "N.C.".
With this solution, you can use the chords as notes /and/ as text
symbols.
That's an interesting possibility that I'd have to look into, since I
haven't got a clue about using the Rest_engraver, although I suspect
it would involve putting in a lot of code inside the music content.
Many things in Lilypond currently result in inelegant coding in
the .ly file to get the job done, although this will eventually be
refined. If I had any computer programming skills I'd be happy to
help with writing those refinements, but alas I wold first have to go
back to school and learn computer programming!
Martial's snippet from a couple of days ago is very helpful in
creating a "N.C." in the chords above the staff and works well:
\version "2.12.2"
NCString = { <c e g>-\markup { \whiteout { \hspace #-2 " N.C. " }}}
ChrdExcep = #(append (sequential-music-to-chord-exceptions NCString #t)
ignatzekExceptions)
{<<
{
\chords {
a2:m7 d2:7.9-
g2:m7 c2:7
\set chordNameExceptions = #ChrdExcep c1 %chord <c e g> as NCString
\unset chordNameExceptions
a2:m7 d2:7.9-
}
}
\relative c' {
a'2 d2
g,2 c2
c4 c4 c4 c4
a2 r2}
>>
}
but having to put
\set chordNameExceptions = #ChrdExcep c1 %chord <c e g> as NCString
\unset chordNameExceptions
into the \chords feels clunky and intrusive to me. I'd prefer to
minimize putting formatting code in the music content as much as
possible. Being able to write something like nc1 (or r1) and have it
interpreted by LilyPond as N.C. would be much more elegant and
intuitive:
{<<
{
\chords {
a2:m7 d2:7.9-
g2:m7 c2:7
nc1
a2:m7 d2:7.9-
}
}
\relative c' {
a'2 d2
g,2 c2
c4 c4 c4 c4
a2 r2}
>>
}
IMHO, YMMV.
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