Transposing Keyless Brass Parts

[Glassmenagerie]

Hello,

Here are a few measures of the 1st trumpet part in F of the 3rd dance of the
Dvorak Slavonic Dances, Op46.  The Bb trumpet player would need to transpose
up 7 intervals on the fly.  There is no key signature.  Quite a challenge
for amateur players.  The concert key starts out in Ab, changes to C at mm.
66, then back to Ab at mm. 110.  I'd like the best way to arrive at the
correct notes and key signature for the Bb trumpet.  



\version "2.18.2"

\header {
  
  title = "III."
  subtitle = "Trumpet I."
  tagline = ##f
  
}

\score {
    
  \relative g' {
  \time 2/4
     
  g8[-.\p g ( aes ) aes] (
  g g4 ) g8 (
  f ) f4 f8 (
  g\<[ ) g ( f\> ees]\! )
  d4 ( c
  bes2 ) 
  
  \bar "|."
  
  }
  }

Thanks !
RDL



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