Absolutely the best rendition of the Dark World theme. Possibly the best rendition I've ever heard of any Zelda music. The original theme was very triumphant and bombastic, yet most people seem to want to make their arrangements/remixes of the theme more subdued and reflective. There's nothing wrong with that, of course - I like several of those arrangements, too, but it's wonderful to hear the theme brought back to its roots.
I also like some of the changes made to the melody - particularly the variation of the melody and the chords in the intro. I'm glad the Jurassic Park thing wasn't too overt. I didn't hear it specifically, but I definitely felt the Williams influence in it. (I was also getting a little bit of a Jerry Goldsmith vibe - did anyone else notice that?)
There was only one spot that kind of bothered me (though it's hardly worth mentioning.) At 3:44-3:57, in the transition to the Mountain/Forest theme, the music felt just a little hollow there. I think it was intentionally done that way, but I thought it made the transition a little awkward. But it's a very minor thing, and once the theme gets going, it really comes in strong.
But, overall, a fantastic piece of music here. I'd give it at least a 9.5/10. Also, what software was used and how much does it cost? Because I want it! If that's not a live orchestra, it's the most realistic synthesis I've ever heard.