There's something you didn't do...
And perhaps you can do now.
You say this is orchestral.
I notice something that sounds like an anvil, perhaps... what all instruments are included in this?
This is an amazing mix of the song, and in fact, I wouldn't be surprised if they used a loop version of this in any HD remake of the game they might make.
... and to think I was trying to find Kefka's theme when I found this.