Morten a great band work in the "American Band Symphonic Style".
I really really enjoyed the work so do not take my suggestion in any way negatively ...
At times when you have a solo line in the more adagio section i.e., at Letter R ... I feel the accompaniment in the brass doesn't flow with the line. The pulse ... hinders with the beautiful melodic theme. Maybe it's a bit square, maybe its the ensemble, and maybe it's just the balance in the mixer? Or maybe you need two instruments playing (playing in unison or not) against the supporting ensemble in those sections?
However, you may want to take a look in those sections.
Once again - A fine band work!

With very
catchy melodies.
Mark