We Help People

Find Their Authentic Voice

Learn how you can take control of your body, define your presence, and communicate your idea with confidence and power.

Define Presence / Develop Confidence / Embrace Power

Vocal Authority Services

We focus on creating confident and dynamic communicators for professional and personal success through hand-on learning exercises

Buy Rena Cook's Books Online

Rena's Books

Rena Cook writes books that aim to empower people through the use of their voice in professional arenas while helping them gain more confidence and authenticity

Empower Your Voice

It is inspiring, inviting and informing as it lays out a process for real and lasting change in how a woman expresses her ideas and opinions

Voice Of The
Young Actor

The book explains the nuts and bolts of phonation, articulation, breathing, etc, in a very easy-to-follow and sensible way.

Breath in action

The book shows that if we can learn to breathe better, we may communicate better, act better, sing better, and feel better.


"Last night I had the opportunity to talk to a group of students at OSU about my career. Thanks to you and all the things you taught me, I had the confidence to address this crowd of around 100. In the past, I probably would have not accepted the invitation and I am really glad I did. I think you would have gotten a good laugh seeing me practice my exercises in the car ride to Stillwater. Though there is still room for improvement, I was really pleased with my presentation. Thanks again for all your help."

- Liza Wenzel

Owner, Wenzel Creative + Strategy


"I've always admired Rena and what she does but it wasn't until she asked me for feedback on the draft of her book that I realized how incredible and awesome this information really is. I proofread her book, then reread it, then reread it again and took notes. Then I started to do the exercises. This was stuff that I hadn't been exposed to in Toastmasters. This was gold! Rena taught me that I could actually control the fight or flight reaction by breathing slowly and deeply. Now when I speak I don't go into fight or flight mode. Recently I participated in a speech contest and am happy to say that I was able to fully express myself, exactly the way I wanted to, without having to battle nerves. Although I was up against some really talented speakers, I did really well!"

- Diana Morgan, MA, ACEFTP

President, Distinguished Toastmasters


"Rena Cook's presentation to our women's executive group on how to more effectively use your voice in a commanding way was uplifting as well as informative. Often, it can be difficult for women in business to balance speaking with power and confidence while maintaining approachability. Never a dull moment in her engaging seminar, Rena addresses this issue with a clear expertise. Every woman in the group left feeling empowered to put the techniques that Rena taught into practice immediately. Her breadth of knowledge on the topic combined with simple, demonstrable techniques to start putting her methods into action made for a powerfully transformative experience."

- Nancy Bruce

Founder and CEO Lambrusco'z Deli


"As the former Speaker Pro Tempore of the Oklahoma House of Representatives, I quickly learned my voice had to have authority, but also authenticity, which can be a delicate balance. I am familiar with Rena Cook's work and its application beyond the theater. The qualities she teaches for the stage are also relevant for business and politics. She offers unique insight for improving communication skills."

- Susan Winchester

President for Research Institute for Economic Development


"Rena is a polished, engaging speaker whose expertise on the subject of speech lends her instant credibility. Her presentation gives listeners the tools to speak clearly and confidently in settings large and small."

- Nick Demos

Jenks Chamber of Commerce


"Your time with us was engaging and I was SO motivated by you and your energy. I believe what you did was the best I've seen since I've been involved with OJT. Your ability to move them (me) to laughter while you encourage self analysis and confidence... is simply amazing!!"

- Dan Regouby

Filtration Group

founder of Vocal Authority

Rena Cook

Rena taught High School Drama for 16 years before she graduated to higher education. For the next two decades she taught professional actors, many of whom can be seen on Broadway, film and television. Through Vocal Authority, Rena adapts actor training techniques to help individual and groups be more confident and dynamic communicators.

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Recent Blog Posts

In A Manner Of Speaking – Paul Meier

Paul’s guest for June 2019 is Rena Cook, a TEDx speaker, author, and voice, speech, confidence, and presentation coach. Rena and Paul discuss voice and speech, particularly among women.

Taming Performance Anxiety

Performance anxiety is part of the fight or flight response. It is a chemical shift that occurs in the body when the body feels it is in danger.

Featured in NSA’s Speaker Magazine

Building a professional speaking career is highly gratifying and also very challenging. The National Speaker Association makes that a whole lot easier. Among the benefits of membership in NSA is…