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
