Good show, Bjorn. You don't overdo it mix-wise and that's the key to this I think. I liked the tremolo on the horn tails, that helps the realism. When are they going to make a Mariachi VST???
Did you ever see that animated movie "Puss in Boots" or whatever it was called? Your piece would fit in well with something like that.
For a crit, I felt it had a bit of "meandering theme" going on. Like the whole thing was an improv rather than a strongly developed theme. And that observation is not really a criticism, as it turns out, 'cause I liked it a lot anyway!
cheers,
-Tom