Classical Brass Trio Arrangement 2 Trumpets and 1 Trombone

I need a clean, performance-ready brass trio arrangement of a specific classical piece I will provide once we start. Please score it for three brass voices; I’m flexible on the exact combination, so feel free to suggest whether Trumpet-Horn-Trombone, Trumpet-Trombone-Tuba, or another practical lineup will serve the music best.

What I’m looking for:
• Faithful treatment of the original harmonies and counterpoint, adapted so each player has a satisfying, playable line.
• Nicely balanced voicing that lets melodies sing while keeping technical demands reasonable for advanced high-school / early university players.
• A full score and separate parts delivered as PDF, plus the source file in Finale, Sibelius, or MuseScore.

I’ll share the reference score/recording the moment we agree to proceed. If you have any questions about range, difficulty, or articulations, let me know—collaboration is welcome so the final chart lands smoothly on music stands.