Hey man, this is cool.
The intro was really cool, and the tune yeah.
As for flow, it seemed smooth although at times the guitar seemed a bit loud and overpowering, but it was pretty good.
The piece as a whole was short and you could have incorporated more parts and instruments into it, but then it is a demo ;) Though it gets a bit repetetive at times.
Other than that the melody seemed pretty decent and the beat was slick (though at times covered up by the guitar). Altogether well done, I definitely liked the wind instrument. I'll check back in when the full version is out.
-Dejinelli-