Frédéric <ufosp...@gmail.com> writes:
> I have some music written for instruments in ut. So I write
> \transposition c' in the source code.
> When I use \transpose to adapt the music to a clarinet, \cueDuring do
> not transpose the cue notes.
>
> In the example below,
> - the violin gets the cue notes in ut which is good
> - ClarinetI has the notes written 1 tone up so that the clarinet
> sounds the same as the singer but the cue notes are still written in
> ut when it should be 1 tone up
> - ClarinetII has everything written for clarinet (1 tone up) but that
> required to writte \transposition bf in the music in ut (before
> applying \transpose) which looks strange to me.
>
> So I have the impression that there is a bug, i.e. that \transposition
> should be changed when \transpose is applied.
>
> Thanks,
>
> F
>
> \version "2.25.20"
>
> \language "english"
>
> Singer = \relative {
> \transposition c'
> c' d e f g a b c
> }
>
> \addQuote "Singer" \Singer
>
> Violin = \relative {
> \transposition c'
> c'' d e f \cueDuring "Singer" #DOWN { g a b c }
> }
>
> ClarinetI = \transpose c d \Violin
>
> ClarinetII = \transpose c d \relative {
> \transposition bf
> c'' d e f \cueDuring "Singer" #DOWN { g a b c }
> }
>
> \score {
> \new Score <<
> \new Staff \with { instrumentName = "Singer" } << \Singer >>
> \new Staff \with { instrumentName = "Violin" } << \Violin >>
> \new Staff \with { instrumentName = "ClarinetI" } << \ClarinetI >>
> \new Staff \with { instrumentName = "ClarinetII" } << \ClarinetII >>
> >>
> }
I think you are mistaken. The purpose of \transposition is to change
the relation between written and sounding notes; the purpose of
\transpose is to change the written notes. Those purposes are
orthogonal.
When you are writing notes to be used by instruments in different
transposition, it is a bad idea to put a \transposition in the notes.
That pins down the relation between written and sounding notes, and you
don't want that.
You can create MIDI to hear what LilyPond's idea of sounding notes is:
the cue notes are engraved by looking at both the transposition of the
current staff as well as that of the quoted staff. For this to work
sensibly, the \transposition has to appear in the staff of the
instrument actually playing at a different concert pitch, not anywhere
else.
--
David Kastrup
