I had totally forgotten that this song existed, somehow! And it's a real shame too, as I really like it. So thanks for reminding me! :D
You know, I've experimented with chord changes now and then, but I've never made anything nearly this elaborate! What I like to do, is to take songs like "Happy Birthday" for instance, and switch out the chords to really dark ones :p
But oh man. Funny thing is, I really like the original chords in this piece as well, because while pretty simple, they have a really nice pattern, as well as some changes that sound really good, like the minor to major things and such. But you kept many of the chords too, to some extent, which is nice :)
That said, I also really like what you've done to the piece! This is another one of those tracks that flows really quickly for me, despite not really being that long. There are just so many interesting things going on!
To start with, you definitely picked the right genre. Even if experimental would fit nicely, I'd say that even more than that, this sounds cinematic. I'm pretty sure you used the same strings as in you "Tron: The Son of Flynn- Remake" in quite many places. It's not impossible that you used some other stuff I've heard before, as I feel like I recognize something (like at 4:40 for example). But that is unimportant.
I really love the style you're using. It's not entirely unlike mine when it comes to mixing, even if it is clearly better, on most fronts. But you're using pretty much reverb, and some parts feel a bit muddy. I don't necessarily view this as a negative though! In the end, there are only different approaches to mixing anyway XD
I also enjoyed all the extra effects and instruments you used, and very well for that matter. The new atmosphere allows for an entirely different interpretation of this song, imo.
The most interesting part, to me, is at 3:37, with the organ (that for some reason sounds like some kind of weird/creepy reversed circus organ). It too, reminds me of something, but I can't recall what exactly.
Anywho... There's so much I could comment on in this song. It must've taken a while to make, as there is something new happening all the time! But I don't have much more to say, as it'd basically end with me saying "this is great" at every single part XD
Amazing job, all in all, and I can't wait to hear what more crazy and amazing things you'll upload! ;)