Hey just some things, when you're arranging for brass quintet especially, don't be afraid to switch up which trumpet is playing the highest. Usually seating doesn't even matter in a brass quintet and trumpets during longer concerts will switch around to save chops. I think if you revised this with switching around who's playing the higher and "harder" parts more frequently this arrangement would be way more marketable. Right now it's a chop killer for 1st trumpet. Explore the freedom of this being an arrangement, switch some melodies around for the fun of it. Thanks for reading

Marvelous