Melodies/harmonies need work, drums are great!
Well, I need to start by telling you that you start WAAAY too loud. I had to turn down the volume... try not to let that happen later on.
Hmm. You start out a bit plainly and simply, which isn't good. You could have used a bit more throughout the entire song, as it feels a bit empty. Do you know what I mean? Good points include a nice buildup into the melody and good transitions throughout the song.
Your "melody" is really just a bassline. And an overcliched one at that, too. You didn't even change it up at all, sticking with the same three-note sequence. Try to be a bit more original with it next time.
Now I'm seeing more harmonies coming out, though quality's being sacrificed now. You're making a mistake I used to make, which was that you wanted to give yourself somewhere to build up to, and took out too many harmonies in the beginning. The end of the song with all of the harmonies is good, and you don't suffer from a lack of them there, though. A suggestion I have for you is to instead have NO harmonies in the beginning, have DIFFERENT ones. Maybe have a quiet, mellow section in between the beginning section and the ending section to make the end seem even more fast-paced, if that's your style. Just a few thoughts.
Your drums were the best part of this song - you did a very good job with them compared to the impression the other parts of the song gave me. They do wonders for your transitions and buildups, which is good, though they get to being a bit too quiet later on in the song. It sounded good before you introduced more harmonies... that doesn't mean you shouldn't have as many harmonies, but you should try to figure out how to keep the harmonies there without interrupting the drums. ;)
Synth choice could definitely have been a bit better. The bass arpeggio you have throughout the song (you start the song with it) is good, but you could have chosen that a bit better, I think. The first harmony synth you introduce could definitely have been better-chosen, I think that was the worst choice of the song. (It's all relative, though... halfway decent on its own but bad compared to your other choices. You know what I mean?)
You had a bit of a cliched attitude I see all the time as I review, and while you could have built on that I didn't see that much in the song. Your drums did most of it, of course. If you had built on that with better synths and variation in your melodies and harmonies, the song would have sounded MUCH better, I'm sure.
Overall it's decent. I'd vote 3 or 4, but I don't want to lower your score... so I'll 5 it. =D Why don't you stop by my audio page and listen to a song or two of mine? A review for either of my two most recent (Aster Revisited or Lost in Time) would be especially appreciated. Thanks, and keep up the good work.