The perfect way to start every rehearsal, this warm-up shines focus on individual scale proficiency, balance of moving lines against sustained notes, attacks and releases.  The best part is that once the students know how it goes, all you have to do is point at your lead trumpet player to start a rehearsal.
 
Brass Ranges: 
Trombone 1: Bb above the staff (high Bb)
Trumpet 1: D above the staff