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Re: transpositions within a global key setting.
From: |
David Wright |
Subject: |
Re: transpositions within a global key setting. |
Date: |
Tue, 10 Dec 2019 09:54:45 -0600 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Tue 10 Dec 2019 at 07:41:07 (+0100), Urs Liska wrote:
> Am 09.12.19 um 15:24 schrieb N. Andrew Walsh:
> > let us say I have a piece where I want to specify the key
> > signature once for all instruments. I have something like the
> > following:
> >
> > \version = 2.19.82
> > global= {
> > \key f \minor
> > \time 4/8
> > }
> > %% (and whatever other settings I want)
> >
> > oDAMusic = \transpose a c {
> > \relative c''' {
> > \key as \minor
> > {{MUSIC}}
> > }
> > }
>
> What this code is trying to convey (different from your intentions)
> that MUSIC is some music in as minor that is then transposed to f
> minor.
>
> What you *need* to say is that the music is in f minor (because that
> is your key signature) but transposed *for display* to as minor. It
> should immediately strike you as odd when you seem to need to write
> \key as \minor when you are not actually having polytonality.
>
> So the key signature in your music should be the f minor specified in
> the global variable (note BTW that it is not ideal practice naming a
> variable "global"),
But both the LM and NR use this convention frequently; the former
recommends it (§3.2.3).
> and you can simply include that *within* the music
> expression rather than in teh staff definition.
I don't see how that works for anything beyond the trivial, for example:
global = { % with original pagination
\key f \major
\time 2/2
s1 * 3 \break
s1
\repeat volta 2 {
s1 * 3 \break
s1 * 3 \break
} \alternative {
{
s1 * 2
} {
s1 \break
s1
} }
s1 * 3 \break
\pageBreak
s1 * 5 \break
s1 * 3 \break
s1 * 3 \break
s1 * 2
\bar "||"
\key c \major
s1 \break
s1 * 3 \break
\pageBreak
s1 * 3 \break
s1 * 3 \break
s1 * 3 \break
s1 * 3 \break
\bar "||"
\key df \major
s1 * 3 \break
\pageBreak
s1 * 3 \break
s1 * 2
\bar "||"
\key f \major
s1 \break
s1 * 3 \break
s1 * 3 \break
s1
\bar "||"
s1 s2
\bar "|."
}
#(set-global-staff-size 18)
\book {
\bookOutputSuffix "2staves"
\score {
\transpose f f
\new ChoirStaff <<
\new Staff = stop \with { \consists Bar_number_engraver } <<
\clef treble \global
\new Voice { \accident \voiceOne \soprano }
\addlyrics \with { alignAboveContext = stop } { \sopranofrag }
\new Voice { \accident \voiceTwo \alto }
\addlyrics { \altotext }
\addlyrics { \altotextii }
>>
\new Staff = sbot <<
\clef "bass^8" \global
\new Voice { \accident \voiceOne \tenor }
\addlyrics \with { alignAboveContext = sbot } { \tenorfrag }
\new Voice { \accident \voiceTwo \bass }
\addlyrics { \bassfrag }
>>
>>
\layout {
\context {
\Score
\remove Bar_number_engraver
}
}
}
}
> You define the music in the original key and then transpose it to the
> key you want it displayed in. If you are dealing with MIDI output (and
> even if not you should consider it) you can then use \transposition to
> re-transpose the MIDI output without affecting the engraved key and
> pitches (see
> http://lilypond.org/doc/v2.19/Documentation/notation/displaying-pitches#instrument-transpositions
> (which is where you should have looked at)).
>
> This is what you want to do:
>
> \version "2.19.82"
> global= {
> \key f \minor
> \time 4/8
> }
>
> oDAMusic =
> \transpose f as
> \relative c' {
> \transposition a
> \global
> f g as
> }
>
> \score {
> \new Staff = "Staff_oboeDA" <<
> \oDAMusic
> >>
> }
>
> > \score {
> > \new Staff = "Staff_oboeDA" <<
> > \global \oDAMusic
> > >>
> > }
> >
> > I've omitted other variables, instrument blocks, and settings. My
> > question is what to do about this instrument, the oboe d'amore,
> > which transposes. According to the NR, here:
> >
> > http://lilypond.org/doc/v2.19/Documentation/notation/changing-multiple-pitches#transpose
> >
> > I would need to format the block like this to print the correct
> > key signature. When I do this, however, Lily throws an error about
> > "Two simultaneous key-change events" and that one will be junked.
> > Score output, however, looks fine, with the transposition and
> > key-signature correct.
> >
> > As a general question, how should I be formatting this so that I
> > don't get an error?
Cheers,
David.