I've been updating the StewMuse website and adding some pieces to the catalog for trumpet ensembles.

Variations on a Theme by J.S. Bach (Stewart) - The Brandenburg Concerto theme, for 10 trumpets (double quintets of picc, 3 C's, and flugel). Professional level work, everyone gets a workout!

La Rejouissance (Handel)- Straight ahead arrangement for trumpet sextet (picc, 3Cs, flug).

Game of Fifths (Stewart)- Work for solo trumpet + trumpet sextet (4 Bbs + 2 flugels). Moderate difficulty, a little more so in the solo part.

Las trompetas matadoras (Stewart)- Short trumpet quartet in bold style suitable for medium skilled players.

Polyphonies IV (Stewart)- Solo trumpet in C plus standard brass quintet. A fairly difficult work for all players. Lots of interaction between parts.

Sample PDFs of the scores to these works can be seen at the StewMuse web pages. Stop by sometime!

http://www.stewmuse.com/Brass1-5.html (small brass ensembles)
http://www.stewmuse.com/Brass6.html (6 or more players)