Setting midiInstrument globally

[Laurent Martelli]

I am using the Staff.instrument to print exercises numbers, so I must
use midiInstrument to set the instrument to be used for midi
output. It works well if I use 

        \property Staff.midiInstrument = "trumpet"

in each score, but since I've got many of them I'd like to set this
globally. I tried this without any success :

  \translator {
    \ScoreContext 
      \remove "Bar_number_engraver";
      midiInstrument = "trumpet";
  }
  \translator {
    \StaffContext
      midiInstrument = "trumpet";
        ...
  }

-- 
Laurent Martelli
address@hidden              http://www.linuxfan.com/~laurent