Growl Codex
A library of screams and growls from goblin to guttural.

Metal Growl Mastery
Online metal vocal course / harsh vocal training
Jesse Redheart, Finnish/American metal vocalist and vocal teacher
Beginners, metalheads, singers, and vocalists who want to learn growls and screams safely
Beginner-friendly, with advanced bonuses depending on tier
People looking for instant results, medical vocal therapy, or reckless screaming without technique
False cord distortion, growls, screams, breath support, diaphragm compression, vocal safety, power, range, consistency, and song performance
Self-paced video course with step-by-step lessons
Instant access after purchase









This bonus module helps you troubleshoot the most common problems vocalists run into when learning harsh vocals.
Inside, you’ll learn how to diagnose and fix issues like:

A library of screams and growls from goblin to guttural.
Join the legion of growlers. Get support, feedback, and stay motivated.
Analyze vocals from your favorite metal songs and learn what makes them work.
A simple daily routine to build consistency, control, and confidence fast.
Learn how to capture brutal vocals with confidence at home.
Recovery and vocal care tools to keep your voice battle-ready.

Core Training
Best for students who want the core step-by-step Metal Growl Mastery course.
More Support
Best for students who want extra troubleshooting, consistency tools, and deeper training support.
Full System
Best for students who want the complete Metal Growl Mastery experience and the full bonus library.

Metal Growl Mastery is best for people who want to learn metal screams, growls, and harsh vocals with a structured training path instead of guessing from random YouTube videos.
Metal Growl Mastery is not a medical voice treatment, and it is not for people who want to force painful sounds or ignore vocal safety.

Still wondering if Metal Growl Mastery is right for you? Open the gates below.
The goal of this course is to help you build brutal vocals without wrecking your throat.
That means we focus heavily on vocal safety, warmups, warning signs, breath support, control, and avoiding the common beginner mistake of just forcing everything through the throat.
That said, heavy vocals still require care. You’ll need to listen to your body, practice responsibly, and stop if something feels painful or wrong.
Brutal does not mean reckless.
Then this course is especially for you.
A lot of people hurt themselves because they try to skip the foundation and go straight into loud, aggressive sounds. In Metal Growl Mastery, we slow things down and build the technique properly.
You’ll learn what to avoid, what sensations to look for, and how to train without just pushing harder.
Metal Growl Mastery focuses on building a strong foundation for brutal metal vocals, including distortion, breath control, compression, power, tone, and range.
The course mainly focuses on false cord distortion, but the goal is not just to memorize labels.
The goal is to understand how to create usable harsh vocals safely and consistently.
Some students may find their first distorted sounds quickly. Others need more time to build coordination, confidence, and control.
The course is designed as a step-by-step path, so you won’t be guessing what to practice next.
Your progress depends on your starting point, practice consistency, and how carefully you follow the exercises.
You don’t need to destroy yourself with marathon practice sessions.
In fact, short, focused practice is usually better — especially when learning heavy vocals.
Start with small sessions, follow the course guidance, warm up properly, and pay attention to how your voice feels afterward.
Consistency beats chaos.
No special equipment is required to start.
You can begin with your voice, a place to practice, and something simple to record yourself with — even your phone.
If you want to record vocals more seriously later, the higher tiers may include guidance on recording, gear, and capturing your sound at home.
Yes. After joining, you’ll get access to the course so you can start training right away.
Depending on the tier and launch structure, some bonuses, live calls, or community features may unlock separately.
Choose Standard if you want the core Metal Growl Mastery training and a clear step-by-step path.
Choose Advanced if you want extra tools, bonuses, and more support for building consistency, recording, recovery, and improving your sound.
Choose Mastery if you want the full experience with the deepest bonuses, community, support, and the highest level of guidance.
If you want the full demon-slaying arsenal, go Mastery.
Yes. Metal Growl Mastery is beginner-friendly and starts with vocal safety, warmups, distortion activation, breath support, and your first growls before moving into power, range, and song performance.
Yes. Metal Growl Mastery mainly focuses on false cord distortion and harsh vocal foundations, including growls, screams, breath support, compression, control, power, and range.
Yes. Metal Growl Mastery is an online video course, so you can train at home with short focused practice sessions.
You do not need special equipment to start, although recording yourself with a phone can help you track progress.
Metal Growl Mastery can help vocalists build techniques used in deathcore, metalcore, death metal, black metal, and other extreme metal styles, including low growls, powerful screams, and harsh vocal control.
Metal Growl Mastery gives you a structured path instead of random disconnected tips.
The course is organized into clear training stages that build from safety and activation to control, power, range, and performance.
Stop guessing. Start training. Build brutal vocals with power, control, range, and confidence.
Instant access • Step-by-step training • Built for brutal metal vocals