The mastering on this track is phenomenal. If you don't mind my asking, what program did you write this in? What plugins did you use? The patches sound pretty high quality and they mix well together.
I write most of my work in Finale 2011, use the aria engine, and Garritan plugins.
Good progression. This builds wonderfully into a very climactic piece. I thoroughly enjoyed listening to this bit. I'd say this "exercise" has been an epic success. Well done, friend.
Please contact me if you would like to use this in a project. We can discuss the details.