Ok. So, one of the most coveted of all musical feats: The larynx shredding sound of a scream. Adding emotion, power, and depth to any song, this astounding ability is one of the most strived to by anyone who has ever listened to Finch or The Used and is in a band. There are many articles describing all the scientific and well-thought out (overly thought out if you'd ask me) 'how to do' steps to screaming. And while these articles provide some-what useful information to beginning vocalists, to some other, less 'read and then do' people, who are more the 'just f--king do it' type, some valuable information is lost. I'm the type B person, I've got the just do it attitude, and I'm going to offer my experience in screaming and things that I have learned in becoming 'fluent' in this trait.
Like most others working to perfect screaming, I started out listening to my favorite bands with screaming, Finch and The Used. I lisened to Bert and Nate's voice, trying to picture in my head what those sounds might look like. If you can imagine, soundwaves, from voices, a normal talking voice being a smooth sound, a few ripples here and there, a deep bass tone would be very smooth, no ripples, and a scream such as those found in many songs, and the kind most people try to obtain talent to do, is Very rippled, in pieces it may appear. Shredded, diced, chopped, whatever. I'd try right off just yelling, like you would to say hey oto a friend across the parking lot... close, but no stogey. I then resorted, after many weeks of frustrating pains in the throat and headaches, to reading articles online, how to scream. There were a few articles depicting what to do and many different roads to the same goal. To make a long story short, none worked. One interesting 'tip' I read said to 'let the microphone do the work, let IT give you the volume, all you need to do is make the sounds and the speaker will amplify it." Well hell yeah! All I have to do is make the sounds and the MIC does everything! Sound too good to be true? Yea, it is. I'm sorry guys, no, it doesn't work like that. It's called a 'scream' for a reaosn. You have to scream. Seems like a 'no shit' kind of problem to me, but I suppose not for most aspiring vocalists. You know how to project your voice, everybody has yelled at one time or another, the only thing left to do is get the 'rippled/chopped' sound in there.
I decided one day with my band that we should cover 'What It Is To Burn' by Finch (kickass song and CD). I showed them the chords and we started playing. I skipped the first screaming part in the intro because I 'knew' I couldn't do it, and didn't want to embarrass myself. Well, as the song moved on, the band gradually got harder and harder into the song. Right at the interlude where Nate screams "She Burns", I went for it. I pushed my voice as loud as possible and moved my vocal chords just right, and I just let go. I screamed then and finished the song. My drummer even exclaimed, "Dude I did not know you could scream!' and all I could think was 'Hell, me either!" But that's all I can say to anyone wanting to scream, Just go for it. Scream. Think about that word, what it means. Project your voice as loud as possible, and move the pitch up to notes that you can't hit, your voice will crackle out and you will have your scream. Surprising as it may seem, it doesn't hurt (at least for myself, I can't speak for everyone) and you can still retain your singing voice, granted, high notes will sound alot rougher, but the next day you will be fine.
That's all the advice I can offer, it's hard to explain a technique that even I am not sure how I do, but I try. Good luck with further practicing of these steps and keep being into music - it's the only thing on Earth that can keep some of us on the ground.
Have fun and God Bless (who ever your's may be).