Layne Stanley's voice is very true and pure. His singing is known from coming immediately from the heart, making him one of my favorite singers.
I would like to start by introducing you to a band called Alice In Chains. This is a grunge group, who got famous when the grunge movement started ( in the 90's ) around the same time as Nirvana.
Alice in chains has often been qualified as Grunge by the media, but Jerry Cantrell ( the songwriter / guitarist ) says that they are actually a heavy metal band.
One of my favorite alice in chains songs :