I love the melody,, it's not too repetitive
I really love the slow melodic part :3
I would like to hear what would happen if you mixed this melody with another instrumental that complements it .. would be an interesting twist

came to comment about how I used to have the same profile pic, stayed to comment on how awesome and simple this song is! It's one of those songs that you just hear and know that that's the only song you'll be listening to for a month!

Just a quick review - I like the melodies, tones, and general composition.
Drums need to come up in the mix by a db. Not just the kick. The snare is somewhat
lacking though - could be replaced with a more accurate snare sound. The kick could use some top end eq'd into it.

As per the drum part changes at - I like the first change(1:29 and 3:29) but the second change (1:44 and 3:44) along with the effect you added seemed a little obnoxious. That's just personal opinion though.