Nice
I think the whole concept of the song is very good. What are the notes? I might want to experiment with something like this. Nice guitar synth part at the end. It sounds good, despite being a synth. I think a change of drums would be good. I think it'd be better for the song, if you intend on it looping. Great work on the beginning of it.
I think the beginning of the guitar synth stuff should've been done with feedback. It is much softer and better for ambience, and would make way for the synths later on. It'd also be better for it to be an octave lower.