Re: Transposing instruments

[Hilary Snaden]

On 2012-06-07 15:39, Helge Kruse wrote:
> I am transcribing an autograph with an arrangement for a small
> orchestra. There are two transposing instruments: Clarinet in B and
> French horn in F. The piece itself is set in g minor (some parts also in
> g major).
>
> The original score begins with this picture:
>
> oboe = \relative c'' { \key g \minor d16 d8. ~ d4 }
> clarinetB = \relative c'' { c16 c8. ~ c4 }
> hornF = \relative c'' { d16 d8. ~ d4 }
>
> \score { <<
> \new Staff { \oboe }
> \new Staff { \clarinetB }
> \new Staff { \hornF }
>  >>
> \layout {}
> \midi {}
> }
>
> besides some other voices. I know the name "Clarinet in B" but honestly
> I don't know what this means. Which pitches should I get from these notes?
> How can I set this with Lilypond so that I can also create a MIDI file
> with correct pitches? I would like to have the MIDI file for acoustic
> error check of my transcription.
>
> How can I use \transpose and \transposition to get both a nice looking
> PDF output and a useful MIDI file? I assume that the music definition
> will include the \key g \minor for all voices and the transpose will
> change it and removes the flats. But I didn't get it in the last hours.

There are probably other ways, but I use separate layout and midi score 
blocks, something like

\score {
  \new Staff { \transpose c d \clarinetB }
  \layout {}
}

\score {
  \new Voice = "Clarinet" {
    \set Staff.midiInstrument = "clarinet"
    \set Staff.midiMaximumVolume = #0.6
    \set Staff.midiMinimumVolume = #0.2
    \clarinetB
  }
  \midi {}
}

so that the music is transposed in the score, but kept at concert pitch 
in the MIDI file.

--
Hilary Snaden