I frequently speak in generalities, trying to show a pattern rather than an
exact example. Thank you for your clarification. I apologize for any
confusion I caused.
Jerry
On Sat, Sep 18, 2021, 1:47 AM Lukas-Fabian Moser <l...@gmx.de> wrote:
> Hi Jerry,
>
> Am 18.09.21 um 00:22 schrieb JxStarks:
> > Hi Kenneth,
> > I use LilyPond v 2.22.1 through Frescobaldi. When I'm dealing with
> > transposing instruments I arrange everything in C, then transpose the
> > parts. I would write a trumpet part like this:
> >
> > trumpet = \transpose c bes {
> > \global
> > notes, etc,
> > }
> > }
> >
> > This way I can insert a % to comment out the transposition when I want
> > Lilypond's MIDI to play it for me:
> > trumpet = %\transpose c bes {
> > \global
> > notes, etc,
> > %}
> > }
> > When printing the parts, I remove the % signs, and they print out in
> > the transposed key.
>
> I think that's wrong in multiple ways.
>
> First: "c" and "bes" are from the same octave, so they are a 7th apart.
> This is not the usual transposition of a Bb trumpet: It should be c' and
> bes, for example.
>
> Second: Your description sounds as if "notes" are meant "in C" (concert
> pitch, "sounding") (because you do not want \transpose for MIDI
> generation). Then your transposition goes in the wrong direction: If
> \mus contains concert pitch music, it has to be printed by
>
> \transpose bes c' \mus
>
> or equivalently
>
> \transpose c d \mus
>
> in order to be played correctly by a player using a Bb trumpet, as
> explained by various people in this thread. (For a written "d", a Bb
> trumpet gives a "physical" "c"; so in order to get a "c", one has to
> write a "d", and so forth.)
>
> Lukas
>
>
