Pretty good so far. this song i hope will be much better though when you finish it. I am not saying it's bad, but I am saying it needs more... err... dimensions? It has many sounds so far and is mostly bass (Which is fine). But in my opinion, it should have some different notes or tunes. I mean added to what you have.
Overall i think this preview shows great potential and is pretty good so far! Can't wait for the finished project!