I know it's not natural, but damn it sounded good. That's why he sounded so forceful on TES. You can really hear the layering when you listen to his TES songs stripped of the music (a capella).
Check out Sing for the Moment a capella: http://www.youtube.com/watch?v=2VIbfOnd ... re=related
At points, the layering makes him sound demonic...

















