Nice work thus far
Although, despite it being good you shouldn't just rely on the middle to save the rest of the song.
You have some very creative ideas going on in your piece here. It is a bit slow but it all meshes together fairly well. The first harmonic loop doesn't bode so well with me, but when you get the main melody up and jumping, I'm up and jumping with it.
So it is going rather well although a bit repetetive. Then near the end the melody settles down and allows the drums to take main control, which isn't bad since I'm digging the acoustic echoes you are using. However, I think you could have done more before handing it all over to the beat. It was a popping melody, pretty good I must say, and it's a shame it ended so early in the song. It just doesn't have the same impact anymore after the middle part.
You make up for that more or less with the drum patterns you use, which are pretty rad. However, the end feels a bit weak, as in it leaves me without wanting more. A great song generally makes you listen to it 30 or 40 times.
Thanks for taking the time to write the review man! This is an unfinished version. Thanks for the constuctive criticism! (not in a bad way)