Who was the first to incorporate clean/growling vocals into their music?

[Misanthrope]

hehe you see? that is just as valid as an oficial record label cd

 

[Malaclypse]

ok i give up

 

[MacMoney]

Misanthrope:

I know but Sodom was doing demos before their first actual release too. And Angelripper's vocals sound like growls to me. Anyways it's hard to say since we don't have access to all the material.