The impossible Dream Duet for various Brass Instruments & Piano this edition includes parts for: 2 Bb Trumpets/Cornets Eb Trumpet/Cornet (lower octava) & Bb Trumpet/Cornet Bb Trumpet/Cornet & Eb Horn (upper octava) 2 Eb Horns (lower or upper octava) Eb Horn (lower octava) & Bb Euphonium/Trombone 2 Bb Euphonium/Trombone (treble clef) 2 Trombone/Euphonium (bass clef)