Thank you so much for your feedback!
The swing came by accident, when I was messing around with the delay, but I kept it around because it was cool, I feel like the straight 8th notes sounded nice, but I'll try to match and see if it's better.
Maybe you're right about the trumpets. I'll try a distorted guitar and a synth, and see if it fits better. About tying it all together, I wanted to do that with leitmotifs and such, maybe a fourth track that used elements of all the previous ones, but I was already in a huge crunch with the third track, there was no time to connecting work.
Thank you for taking your time to listen and review my music. : ]