Very good.
I loved the feeling it gave, a post apocalyptic world caused by our pollution. I defiantly agree and it is pretty scary. What i think is so great is how you fit everything to the music. Not just the pictures and pulsing, but the colors and the mood, more active backgrounds during more active parts of the song.
But still, it was very simple, no doubt it took a lot of effort idea wise, but relative to other animated works, it wasn't graphically spectacular. However, i think a simple and still environment was the bet way to go. You did an excellent job.