Not too shabby especially for something that you’ve done in 3 days. I’m not going to nitpick too much at the production of the piece. It did seem to drag at parts, but the arpeggios at 4:00 was a pleasant surprise. The more I listen to it, I’ve come to actually enjoy this.
How you used some of the instruments, at times they did seem to be a little unnatural. For example, I can hear the horns being played in a way that seemed like they were being inputted via a keyboard or just penciled in. Some automation would help that, and how I would approach that is by treating it as a voice so you can have an idea on the dynamics and how a musician would breath as they play their instrument.
Overall, musically speaking, I enjoyed the brooding nature of the piece and your choice of arrangement. Like I said for 3 days it’s good. I would have just spent a little more time with this in tweaking what you have to make it sound a bit more natural with the use of automation and legato in between notes.
With that review, I don’t want to make it seem like I didn’t enjoy the piece, however, because I actually did.