Exclusive upgrade: $300 off the full system. Available on this page only. Claim My $300 Off
✓ Your Foundation order is confirmed. Before you go, there is one thing I only offer right here.
One-Time Offer • Foundation Students Only

If You Are Serious About Going Pro,
This Is the Exact System My Students Used.

Watch first: Chrissellene explains who this upgrade is really for

Broadway performers. National tours. The actors, comedians, and speakers who come to me when their voice has to hold up under real pressure. They all trained on this system. You have just secured the foundation. This is what comes after it, and today it costs $300 less than anywhere else.

Regular price$1,497
Price on my website today$997
Your price on this page$697
You save $300 more, and this is the only place that price exists.
Proof, Not Promises

Don’t Take My Word For It

This system has transformed the lives of singers, actors, musicians, absolute beginners, and many others around the world. Tap any video to hear it in their own voice.

Let Me Be Straight With You

Most People Should Stay With the Foundation

The foundation you just bought will give you a reliable, consistent voice. For a lot of singers that is exactly enough, and I mean that. If you sing for the love of it, stay there. Work it. It will serve you.

But some of you are not most people.

Some of you want to sing or perform for a living, or you already do. You know your voice has to hold up eight shows a week, in an audition room, on a set, or in front of a courtroom. You cannot afford a voice that works most of the time.

If that is you, this is the system my professionals train on, and this page is the only place you will see it at this price.

The Gap

What Separates Foundation From Mastery

The Foundation gets you stable. Complete Mastery gets you exceptional.

The Foundation
$47
What you just bought
  • Core posture, breathing mechanics, and throat
  • Basic performance psychology
  • An introduction to the science
  • Self-guided learning
Complete Mastery
$697
$997 on my website. $300 off on this page only.
  • All 17 lessons of the complete system
  • Advanced technique for range, stamina, and power
  • Performance psychology mastery for high-stakes moments
  • Learn to control the interfering emotions that wreck a voice
  • A strong, enduring voice with no cracks or breaks
  • Predictable high notes and low notes
  • The complete MRI and fibre-optic science library
  • Live monthly group coaching with me
What You Get

The Complete System

Phase 1

Advanced Vocal Technique

Lessons 1 to 12, plus 14 to 16 • Weeks 1 to 4

Range Expansion & Control

Safely expand your range and access your full voice without strain. Mix-voice mastery for seamless transitions, with no breaks or cracks, shown through MRI and fibre-optic analysis of what actually happens.

Power, Projection & Endurance

Increase volume without forcing. Resonance strategies for filling large spaces, the science of why some voices carry, and how to hold power and endurance through long performances.

Your Signature Sound

Emotional delivery without vocal sacrifice, genre-specific technique (musical theatre, pop, rock, opera, contemporary), and how to make your voice your signature sound.

Stamina & Vocal Health Lessons 14 to 16

The exact protocols my touring students use for 8-show weeks, how to recover from vocal fatigue fast, and the hydration, nutrition, and lifestyle factors backed by research. Plus advanced dynamics and phrasing.

Phase 2

Performance Psychology Mastery

Lesson 13 • Weeks 5 to 6

High-Stakes Performance Protocol

My complete system for controlling interfering emotions, the one my Broadway and professional students use. How to recognise when emotions are interfering and stop them, how to perform your best when it matters most, and the neuroscience of peak performance states.

Mental Resilience & Recovery

Handling rejection, bad reviews, and setbacks. Not personalising criticism, the psychology of consistent excellence, and how to bounce back from “off” performances with unshakeable confidence.

The Professional Mindset

How to show up like a pro before you have “made it”, managing performance anxiety long term, the mental game of auditions and competitions, and career sustainability strategies.

Phase 3

The Science Library & Live Coaching

Ongoing access

Complete MRI Science Library

Full MRI imaging and video sequences of optimal vocal production woven through every lesson, comparative analysis of misconceptions versus facts, visual proof of what “support” actually looks like, and research citations for every method taught.

Complete Fibre-Optic Footage Library

Real-time laryngoscopy of proper vocal fold closure, what happens during tension, strain, and fatigue, and a visual comparison of healthy versus unhealthy technique across different vocal styles.

Monthly Group Coaching Calls (Live)

Live Q&A on your specific challenges, direct access to 38 years of coaching experience, technique demonstrations and breakdowns, and help identifying your specific technical challenges.

Proof, Not Promises

The Careers Built On This System

Broadway actors, touring performers, teachers, and professionals who need their voice to hold up when it counts.

Vocal Mastery students
★★★★★ Rated 4.9 / 5.0 by 3,000+ students worldwide
★★★★★

“I wouldn’t have been able to project on a Broadway stage, which I had to do a year later, if it weren’t for the Commands.”

Noah Robbins
Noah Robbins
TV / Film / Broadway Actor
★★★★★

“The Commands outline the most straightforward method for protecting, strengthening, and maintaining your voice so you won’t have to worry about it again.”

Alan Paul
Alan Paul
Artistic Director, Barrington Stage Company
★★★★★

“I had crippling anxiety surrounding both auditions and performing. Performance Mode was the secret ingredient I needed to enjoy performing again. It gave me the ability to keep my nerves in check.”

Rajni Rao
Rajni Rao
Singer & Math Tutor
★★★★★

“Before learning from Chrissellene, I tried everything I knew in my training to correct the issues, and nothing was working. Today I have a full studio where I teach Performance Mode and the 7 Commands.”

Melody Stevens
Melody Stevens
Singer, Teacher, Musical Theatre Director
★★★★★

“Chrissellene’s techniques have helped me not only as a singer in my professional life, but also as a wife and mom in my personal life. I have performed more and gained more confidence as a person and performer.”

Mara Adler-O'Kelly
Mara Adler-O’Kelly
Lyric Soprano, Vocalist & Educator
★★★★★

“The first smart thing I did concerning my vocal training was realizing I was missing something and needed help. If you are a human on planet earth who has any kind of emotional or artistic needs, you will only benefit from Performance Mode and the Commands.”

Emma Kingsley
Emma Kingsley
Singer, Actor, Lady Farmer Founder
★★★★★

“When I first met Chrissellene, I was curious. I am not a singer, I’m an international lawyer. In just a few lessons, I transformed my nasal sound and confidence. Performance Mode and the Commands have changed my life!”

Paula Ruiz
Paula Ruiz
International Attorney / Speaker & Presenter
Your Exclusive Upgrade

Add Complete Mastery for $697

One click. Your payment details are already on file, so there is nothing to re-enter.

Only on this page

This price is not on my website, and once you move on from this page the offer closes. Take a moment and decide now.

Vocal Mastery: The Complete System on laptop and mobile
Private vocal coaching at my level$200 to $300 / session
To get what is in this program, you would need 30 to 40 sessions$6,000 to $12,000
The system on my website$997
Your price on this page$697
Regular price$1,497
Price on my website today$997
Your price on this page$697
You save $300 more, and this is the only place that price exists.

Payment Plan

Spread the cost. Same full access from day one.

3 × $249

Per month for 3 months • +tax

  • All 17 lessons + complete science library
  • Live monthly group coaching calls
  • Lifetime access + all future updates
  • 90-day transformation guarantee
Add the 3-Payment Plan3 payments of $249 • Full access day 1

First payment today, then monthly

90-Day Transformation Guarantee

Go through the complete program. Apply the advanced techniques. Show up to the coaching calls. If after 90 days you do not feel more advanced vocal control, more confidence in high-pressure situations, and more equipped to pursue a professional career, I will refund every penny. I have been doing this for 38 years. My students are on Broadway and they are professionals. This system works if you have the discipline to work it. If you show up and it does not transform your voice, I have not earned your investment.

What to Expect

Your Transformation Timeline

Weeks 1-4

Advanced Technique

  • Your range expands safely
  • Stamina increases noticeably
  • You understand your voice at a deeper level
Weeks 5-8

Performance Mastery

  • Nerves stop hijacking your performances
  • You develop consistent control of emotions
  • Your confidence becomes unshakeable
Weeks 9-12

Professional Integration

  • You are singing like a pro
  • Recovery is faster after heavy use
  • No more hoarseness or tension
Month 4+

Career Sustainability

  • Handle 8-show weeks without fatigue
  • Auditions feel exciting, not terrifying
  • You know how to protect your voice for life
Who This Is Not For
  • Casual singers who just want to sound better in the shower.
  • People looking for quick hacks without doing the work.
  • Anyone not willing to practise consistently.
  • People who want results without investing in themselves.

If that is you, stay with the foundation you just bought. Seriously.

Who This Is For
  • Singers preparing for professional auditions.
  • Actors, comedians, and speakers whose voice is their living.
  • Executives and professionals who need to command the room.
  • Musical theatre performers going for Broadway or touring roles.
  • Working singers who want to level up their technique.
  • Anyone serious about building a career on their voice.

If that is you, this is exactly what you need.

Medical Endorsement

Backed by Science. Endorsed by Physicians.

Dr. Blair Eig
“Voice and Science is the bridge Chrissellene has built. Most vocal training provided by professional voice teachers at this time is based on timeworn methods that may have little relationship to actual human physiology. As a physician and a singer, I am quite impressed with the extensive work Ms. Petropoulos has undertaken to develop and support her theories of vocal training. I have seen a marked improvement in many singers she has coached.”
Dr. Blair Eig
M.D., M.B.A., M.A. • Physician & Singer
Only You Know Which Is Right

Two Paths Forward

Path 1: Stay With the Foundation
  • You have the basics.
  • Your voice becomes more reliable than before.
  • You are happy with “pretty good”.
  • That is totally fine.
Path 2: Go Pro
  • You master the advanced technique.
  • You master the interfering emotions that wreak havoc on your voice.
  • You train like my Broadway and professional students trained.
  • You build a career-level voice and confidence.
Questions

Frequently Asked Questions

Because you have just backed yourself by buying the foundation, and I would rather reward that than have you pay full price later. The system is $997 on my website. On this page it is $697. That price does not exist anywhere else, and it closes once you move on from this page.
You do not have to choose. You still start with the foundation, exactly as planned. This simply adds the full system to your account so it is waiting for you when you are ready, at a price you will not see again.
Lifetime. Forever. All future updates included.
There is a payment plan on this page: 3 payments of $249, with full access from day one.
3 to 5 hours of practice for best results, but the program is self-paced.
All genres. The technique applies to any professional singing, and to actors, comedians, and speakers too.
Yes. There is a live Q&A Zoom class once a month where you can bring your specific challenges.
Last Call On This Price

You Have the Foundation. Are You Serious About Going Pro?

The students who made it, the ones now on Broadway, on tour, in recording studios, were not always the most talented when they started. They were the ones who went deeper instead of stopping at the basics. This is the system they went deeper with.

Only on this page

This price is not on my website, and once you move on from this page the offer closes. Take a moment and decide now.

Chrissellene Petropoulos

P.S. Your voice will thank you.

I only take 20 students per quarter into the coaching calls so I can personally review everyone’s progress. And this $300 discount lives on this page only. If you are serious about going pro, take it now. I will see you inside.

Chrissellene

Upgrade for $697
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