Extreme Vocals - Mateusz Sibila
Extreme Vocals is my original vocal‑education system, created and led by me — Mateusz Sibila. My core mission is to help metal vocalists and fans of heavy music master advanced vocal techniques. I teach how to unlock the full depth
of a distorted voice in a way that is 100% practical and completely safe.
My story and mission
My journey with extreme vocals began in 2012. A fascination with death‑ and black‑metal frontmen pushed me to search for reliable knowledge about extreme vocal techniques. At the time, the educational landscape was nearly empty, and trying to imitate inhuman sounds based on random YouTube videos led only to dead ends, frustration, and vocal strain.
I decided to test the mechanics of harsh vocals on my own body. Through years of methodical trial and error, studying various singing methods (like CVT) combined with biomechanical analysis of sound production, I developed a coherent training system that is completely safe for the vocal folds. Today, beginners who train with me avoid the same traps I fell into and achieve better control over their diaphragm, resonance, and false cords within three months than I did in my first year and a half of self‑study.
I created Extreme Vocals so others wouldn’t have to risk the health of their voice. I provide proven procedures that allow you to train growl, fry scream, or raspy singing from the ground up — without wasting time.
My experience and achievements
The core mission of my work is to help metal vocalists master advanced vocal techniques in a way that is 100% practical and completely safe.
16
recorded albums,
5 EPs
750+
satisfied clients
100+
live shows
14+
years of experience
Polish Theatre in Poznań (2017)
Training professional actors in safe stage‑scream techniques for the play "K.". A successful outcome achieved without compromising the vocal health of the cast.
Konador Vocal School, Warsaw (2018)
Collaboration with a renowned school where artists such as Nergal of Behemoth have honed their craft.
Global educational reach
The 'Sibila Extreme Vocal’ YouTube channel has become the foundation for my online courses, used by thousands of vocalists from over 140 countries worldwide.
Extreme Vocals — the offer at a glance
As Extreme Vocals, I offer one‑on‑one extreme vocal coaching. The lessons are available in two formats:
Online Lessons
Real‑time video sessions with active analysis of your body posture, breath support, tone and distortion.
In‑person lessons in Cracow
Direct work on body posture, breath support, and extreme vocal techniques.
Regardless of your current level, you get my full know‑how — no sugarcoating. If you want to master brutal vocal techniques without shredding your throat, get in touch and let’s see how I can support your musical growth during our first session together.