pretty good
I gotta say, it was pretty "phat". I have the original and the lyrics version, and I listen to them constantly. Tough song to beat, but your tribute is great! Nice progression at the beginning. I like the phased synth arp, but when it reaches its highest peak, its a bit shrill. I'm not sure how you layered this, but all I can suggest is some compression and EQing is in need. I find the higher bands are a bit high, especially near the end.
I understand this is a WIP, but I would like to hear a breakdown, where its soft and just the piano is playing.
As for the vocals, they are quite nice, more of a support then a main focus. Overall I quite enjoyed this track, and look forward to future improvements =)
Hope some of that was helpful X_X