Awesome thread. So many great screams/screamers listed here. I need to add one from my youth. Ted Nugent. He was a consummate screamer back in the day - check out Double Live Gonzo. Great example is the track Motor City Madman. If you ever saw him back in the mid 70’s, his shows were a skull-splitting loud, "energetic" relentless assault on the crowd to say the least...
He lets out quite a few screams in this 10+ minute ditty, (3:10 mark, 5:08, 5:45 for example), but the crazy one lead-up starts around the 7:36 mark. If you don’t want to play the whole song, play it from there and let it ride. 8:10 mark or so is the one.
So, with that context, turn this one up and let ’er rip!