I understand that maybe if someone lived near Hollywood, there might have been a few rock vocal coaches, but for most of the country, there weren't any vocal coaches in the 80s, as far as I know. So, when you heard someone like Rob Halford sing "You've Got Another Thing Coming" on the radio, or you went to see Ronnie James Dio on tour with Black Sabbath or his own band Dio, how would aspiring rock vocalists have gone about learning rock style gritty, distorted vocals without destroying their voices? How did rock singers react when they heard a song like Miss Misery by Nazareth? It must have seemed almost impossible! It was released in 1975! It must have seemed so futuristic. Even now, I'm not sure that what he was doing in that song was safe! https://www.youtube.com/watch?v=7xfAQ3lrFc4 Dio's grit in this live version of Children of The Sea from 1983 also seems like it would have been almost impossible to figure out all by yourself. Listen what Dio does in this song but especially at 49-50 seconds! Also at 2:34 where he sings "world" from "hiding in our corner of the world." That's a different distortion than at 49 seconds. The one at 2:34 sounds like an epiglottic blues growl or maybe an arytenoid rattle. It is NOT like the grit as 49 to 50 seconds at all! https://www.youtube.com/watch?v=3nmTOykax3Q How do you think singers like Halford. Dio or the singer in Nazareth learn to use. grit sustainable all by themselves? Do you think they could only work on grit for like 15 minutes a day and had to just keep it really brief since they didn't know what they were doing, until they had figured out a way that worked?