I will make no bones about it, Eric Whitacre is probably my favorite contemporary composer, and the fact that he primarily does choral music versus band is no big deal to me whatsoever.  Especially when I see one of my favorite pieces, "Lux Aurumque," being performed in a whole new way.  Check out the video below, and if you have enough bandwidth crank it up to its full 1080p full screen glory.  I have to think that they had to do some major audio editing, but I am going to give them the benefit of the doubt and assume that it is the real deal.  As one commentor said, "isn't technology amazing?"