Woah, this is some of the best Zelda music I've ever heard! At first, I thought it should have had more variety. It did get some around 1:31. It doesn't really matter, this is just an awesome song! It's the best of its kind I've heard in a long time. It does manage to built itself up, albeit very suddenly at the beginning.
It's something that gets better the more you hear it. It's extremely ambitious. I guess I'm going to be using that word a lot too. This project worked out perfectly. I can't believe nobody has used this in anything. I'd love to hear it!