Powerful vocals - Grunge and 90's rock

I was listening to the searing vocals of Layne Staley (RIP) from Alice In Chains and his singing really touched me. While I play different songs in the video, I try to emulate his singing style and passion, and other similar vocalists.

UPDATE: A little creepy/premonition: I just found out that Kurt Cobain and Layne Staley both passed away on April 5th, 1994 and 2002 respectively...