There's difference between disonnance and non-chordal harmonics. I'm sorry I keep harrassing you about this, although to make a piece easy to listen to, it needs to be harmonically sound. To properly describe your piece it sounds like a child bashing the piano. Though that's only in a chordal reference. The piece itself is good, although the chord and harmony choices are ear splitting.
An example is 0:09-0:14 and 0:28-0:38. It just doesn't work. There were more, although these were ones that'd prove my point. =d It's not dissonance. Some of it may be, although the huge amount used voids this term.
I suggest to read up on chord structures, and next time you compose a piece, while you're composing, list the chords you're going to use above the piece. This way, it'll always sound good.