Ondrej Mráz

Ondrej Mráz as Lindorf

Bass singer with 20+ years on stage
in leading operatic roles (Gremin, Méphistophélès, Vodník, Dulcamara…), I decided to step down. Not because I lost my voice, but because I wanted to be there for my children. Now, I’m bringing the elite stage secrets directly to your screen.

I’ve spent my career working under conditions
where the voice doesn’t have the luxury to fail.

This work comes from solving real limitations in real performance —
not from theory.

I don’t teach singing.
I fix what breaks in trained voices.


1:5 or 1:1 Cohort Work

This is not weekly voice lessons.

This is a small, focused group (max 5 singers)
where we recalibrate your vocal system over time.

You don’t just understand the change —
you stabilize it.


Who This Is For

✔ Professional singers
✔ Advanced students
✔ Working performers


Who This Is Not For

✖ Beginners
✖ Casual hobby singers
✖ People looking for quick tricks


Diagnostic Session

This is not a lesson.

It’s a precise analysis of where your system loses balance.

It’s a focused diagnostic session where we:

– Identify the exact point where your system breaks
– Test how your voice responds to pressure changes
– Give you a direct experience of what balance feels like

Most singers notice a difference immediately —
not because they try harder,
but because the system shifts.

What Happens Next

  • 1. Schedule Your Analysis: Select a time that works for you.
  • 2. Real-Time Acoustic Mapping: We identify your system’s limitations using live data.
  • 3. The Path Forward: If we are a fit, you’ll receive an invitation to join the cohort.

I work with a limited number of singers at a time.

Price: €250

Duration: 45 Minutes

The cost of the diagnostic will be fully credited towards your mentoring program if we decide to work together.

I only take singers where this approach makes sense.

Scroll to Top