Big fan of this. I would imagine writing for tuba ensemble has to be quite difficult, but you've done a really nice job with this piece (as did the tuba players!) If there's one criticism I have, or maybe just a suggestion, it's that considering the power and emotion in the lowest range of the tuba, you might want to save it. Most of the piece utilizes that ultra-low register, which is fine, but one thing I really like is when composers save a great color like that for big moments--Adams does this really well with the low tuba in Short Ride in a Fast Machine. This would also add some more timbral variety to the piece, which is admittedly quite difficult when you're only working with an ensemble of two instruments if you include the euphonium. Just a suggestion!