Grande Duetto various combinations: page 1 – 13 ( 2 – 12) Bb Trumpet or Cornet & Bb Euphonium Eb Horn & Eb Bass Bb Euphonium & Bb Bass page 14 – 28 (13 – 24) Bb Euphonium (treble clef) & Tuba (bass clef) page 29 – 44 (25 – 35) Euphonium (bass clef) & Tuba (bass clef) page 36 – 47 (36 – 47) Bb Trumpet or Cornet & Eb Horn Bb Euphonium (treble clef) & Eb Bass (treble clef)