I couldn't explain why, but I think the beginning of your melody is splendid (D-C-A-B at bar 3). You develop it superbly well. And that chromaticism from 15! I love it too :)
Once again, I'm amazed by your talent for creating a complete, coherent piece with medium-quality sounds and such a small number of instruments. Your great strength is knowing how to build beautiful melodies with an effective arrangement.
It's great that you've taken the theme and changed the lead instrument. The flute adds something medieval, but there's definitely a country feel. The softer, more melancholy beginning contrasts with the happy, bouncy end. It perfectly illustrates the transition from the end of the night to dawn.
You know I love seeing you at the jam, and I really enjoy our exchanges. What also pleases me is to see our progress. When I hear what you're doing today, I can see how far we've come in the last 18 months. You even take the liberty of changing the signature so brilliantly that we don't even realize it. If I didn't have the score in front of me, I wouldn't have heard it.
I also appreciate creativity and risk-taking. You experiment with rhythmic and melodic changes. I can tell you're having fun when you compose. I also sense that you want to surprise us without taking us by the hand.
You can be proud of your music and your progress.