@Raizen1984
So it is.
The good news about this for me is that Sawada's arrangement of Sky High sounds exactly like Sky Sanctuary (and by extension Flying Battery and Act 1 Boss (S&K)) at points.
On a semi-related note, I also noticed the similarities between Drossin's Crystal Cave (
http://www.youtube.com/watch?v=Ux4Lo2Eomn0) and Hidden Palace Zone right at the start.