Re: Question about Transposing: Score vs. Midi Output

[Gilles Sadowski]

On Sun, Jul 03, 2011 at 11:27:25AM +0200, Robert Schmaus wrote:
> Hello fellow Lilyponderers,
> 
> I'm currently typesetting a score for Bigband, i.e. lots of
> transposing instruments. I'm writing everything in concert pitch, so
> I can check everything with the midi output. My initial idea was
> that I would transpose the individual instruments into their desired
> key, once I have finished the concert pitch score.
> 
> Recently, I discovered the \transposition command, and had hoped
> that this would actually be an elegant solution: still writing
> everything in concert pitch, but the engraver would set each voice
> in its correct key. So, in the example below, the Tenor would play
> the same note as the bass (modulo octave) but the notes for the
> Tenor would show d. The Midi file, however now has the tenor play
> b-flat.
> So, I still would have to write every instrument in its own key, but
> would have a correct midi output.
> 
> My question is: is there an "inverse" command to \transposition,
> where I can write everything in concert pitch, s.t. the midi output
> will also remain in concert pitch, but the score is actually
> correct?
> An alternative would be to use the right \transpose command for each
> instrument but suppress all \transpose directives for the midi
> output - is that possible?

You only to combine "\transpose" and "\transposition" (see below).

> Thanks a lot.
> Have a nice sunday,
> Robert
> 
> 
> \version "2.14.1"
> 
> Tenor = \relative c'' {
>       \clef treble
>       \transposition bes

        \transpose c d {
>           c c c c
        }
> }

But see also my post of a few minutes ago (so that the key signature is
correct for the transposed voice).

Best,
Gilles

> 
> Bass = \relative c {
>       \clef bass
>       c c c c
> }
> 
> \score {
>       <<
>               \new Staff \Tenor
>               \new Staff \Bass
>       >>
>       \layout{}
>       \midi{}
> }
>