The first twelve seconds felt a little messy--I think the effect you were going for was deliberate, and it almost works, but doesn't quite. But that might just be me.
I like the melody, it's nice and clear. The string entry at 0:45ish was very good, but the change at 0:56 was too abrupt in my head. It felt like the track had skipped thirty seconds of transition or something. But then it went back to the original idea about a minute later....I don't know what to say, the middle section felt too random.
The synth you add into the piano and strings is a good touch, it's not piercing or overtly invasive of the melody. Though I wish the very end note didn't have the bass or drums added to it.
I think you've got a lot of good ideas here, and you obviously have a good grasp of how to write something very interesting to listen to. The middle bit threw me a little, but in general this was a really good effort.