Interesting...
the bass is WAY to prevalent in the beginning. It really overpowers the song completely, you should check on that.
When it all kicks in it the overall mix is pretty good. Except that it is lacking on the low end. You need something to add to the low end a tad. Just doesn't quite have the body I'm looking for in a song.
The instruments you chose really mesh well together. Everything has it's own place in the song, and really fits nicely in it's little niche. Although personally, I find trance music to be somewhat boring. Melodies are so generic and overdone. As well as beats and loops. But this isn't too bad.
I think you should really do something with the melody, or lack of one. I know that is typical trance style. But for me, I want to hear something melodic in my music. It is a big reason why I always say this is a programmer's dominated genre. You have to be more of a programmer than a musician to come up with trance music.
The harmonies are pretty decent in general. They add some color throughout the song. All in all this is well done for the type of sound you are going for.
4/5 and 7/10 overall. I personally can't give anything trance higher than an 8/10, no matter how good of a "song" it is. I require something a little more melodic and thought provoking for great scores. So it is nothing against your song here, but just the style in general of this type of music.
Best of luck in your future projects bud!
-Gravey-