From knowing quite a few alternative rock and metal musicians, I notice how many in an audition emphasize being able to sing a song with a mellow voice.
Stairway To Heaven seemed to be a measure of that.
Which contains both the mellow voice and a bit of the screaming.

I am not out to be in a band or a "performer" now.
But I have found it more taxing to my body having to concentrate on what I am doing too much.
Being in song, something ought to be able to belt out of people naturally.
There is always going to be that pain in the voice box when someone raises it.

I have an unfortunate smoking habit, and I am always used to my throat hurting a bit.

I would not have had a very operatic voice anyway.
People like Mark Knophler got their voice singing in those dingy smoking dives.

I wonder how someone like that has to put ice on their voice?
They probably take care of their voice by not taking care of it.

http://www.f3music.com/444