How to transpose?

[Kenneth Flak]

Hi,

Trying my hands on transposing from concert pitch to Trumpet in Bf and french 
horn in F, but the displayed notes are still in concert pitch... How do I make 
these display the notes I would like the players to see?


    \new Staff = "trumpet" \with {
      instrumentName = "Trp"
    }
    {
      \clef treble
      \key c \major
      \transposition bf
      g' 
    }
    \new Staff = "french horn" \with {
      instrumentName = "Horn"
    }{
      \clef treble
      \key c \major
      \transposition f
      cs'
    }

Best,
Kenneth

-- 
Roosna & Flak - Contemporary Dance & Music
Web: roosnaflak.com
Code: {github,gitlab}.com/kflak
Mastodon: @k...@sonomu.club