Woah.
Amazing. Before I reviewed this, I checked out the original, and it's about 6-7 minutes. This is almost 9 minutes, maybe cut out some parts which sound the same? Or shorten the intro? The synth/pad thing you used after the piano was so awesome. Out of curiosity, did you just make a square synth and turn down the freq? Sounds like something I found a while ago. Anyway, nothing less than a 5/5 10/10 for this uber thing. :D
P.S If you find a vocalist, could you leave the voxless version here too? Didn't like the vocals in the original much probably won't like it on this either.