I've tried it, and if my voice weren't so high pitched, I would come very close to the actual thing. You have to manipulate your tounge in a strange way. I'm not sure if I can explain how to do it but I'll try. I press the tip of my tounge against the roof of my mouth in the dent part between the base of your gums and the platelet. As you sing you will need to move your tounge around like you normally would. Then to produce the low, throaty growl, its like when you yawn and your tounge sort of goes back in your mouth, and so you sing with it like that. Then when you sing you vibrate your throat like you normally would when singing death metal. Well, I've tried to explain it the best I can, but I can't guarantee it will work out for you.