Professional training Neuro-functional Voice Training© by Iris Hammermeister

Note: The places for the training are now fully booked! The next run starts in 2022!

The training is more in demand than ever. The voice is able to reconnect us with our truth, our inner voice and our primal power. We can only live an autonomous life together with it. For this we have to be connected with our voice. For this we have to be able to tune in and self-regulate ourselves again. In the current situation, there will be more and more people who will need this support. Therefore, this training is forward-looking, meaningful and provides important knowledge from the fields of neurobiology, polyvagal theory, voice physiology, psychotraumatology, voice training, creativity development, developmental psychology, medicine, mysticism and ancient female knowledge. 

General information:

The “Neuro-functional Voice Education©” according to Iris Hammermeister includes the differentiated guided stimulation to build a relationship with the sound, body and nervous system, which develops the expansion of individual perceptual capacity. The refinement of auditory perception, the development of the sound spectrum and the body’s ability to react to sound play an important role in this process. Sound feedbacks have a central place.

This vocal theory includes musical or artistic thinking. This means new seeing, to step out of something known, so that a process is opened. This includes that the individuality is expressed and we have access to our origin again. This voice teaching is not about just expressing feelings, but about accessing an inner space where feelings or thinking do not play a role. The expression of feelings, can be a way there, but requires much more depth. It holds however the danger, in particular with specialists, who work in the therapeutic or health range, to dedicate itself to these feelings too strongly and to activate and strengthen thereby the pain body and/or old wiring patterns of lack and suffering.

Musicians and artist inside have a high measure of non-linear, reflective and critical thinking. Music and art serve as an experience that can be experienced in the form of self-generated experience. This clearly differentiates musical or artistic thinking from therapeutic approaches. The change of perspective does not require a laborious repetitive exercise, but the freedom to take a new point of view. Therefore, this voice work is not a therapy and wants to consciously differentiate itself from it. This voice work assumes that everything is already there, such as potential, creativity, vitality, consciousness, healing, sound, rhythm, love,… and puts the focus on what is already there and only needs space to unfold freely through processes. This means expanding on what is already working well, such as certain pitches or depths, etc. Ultimately, it is about releasing pressure patterns or resistances that stand in the way of accessing potential. This means less and less to DO and MAKE.

This voice process work is not about a singing technique, no optimization strategy or vocal aesthetic orientation. Rather, it is about stimulating the unfolding of the voice, without effort and performance pressure. Neuro-functional voice training” is process- and experience-based. This means that in a process of experience, learning does not have to do with the acquisition of knowledge, but is learned through experience. The learning teaches itself quasi.

This process leads to an inner freedom and liveliness, which promotes joy in BEING and creativity. Here it is especially about letting go of conditioning and compensation patterns learned over many years and remembering who we really are.

Structure of the training

Part 1: Voice training program "How to find your voice again..."

The first part of the training is the Voice Training Program “How to find your voice again…” and includes 6 modules. The voice training program provides the foundation of voice work and focuses on your own experiences and processes. Each module lasts between 4 and 6 weeks. More information about the voice training program is available here: Voice Training Program

The theoretical content is taught in modules each month. These include 55 videos (recordings) introducing the basic principles. Included are 40 voice exercises. In total, the videos last 12 hours and 32 minutes. Access to the videos is available for 12 months. In addition, there is a workbook with information and explanations of the vocal exercises presented in the videos. It contains 118 pages and is printable in color, as well as black and white. 

In addition, there is the possibility to exchange in the closed Facebook group (voice community). 

About Zoom, live meetings are held every 14 days, where questions are answered and individual one-on-one coaching sessions are held. There are a total of 12 meetings a 90 – 120 minutes.  This corresponds to 24 hours of care of the process.

In addition, there is a Telegram group where women can arrange meetings and exchange information. Questions that arise during the process are also answered here. Therefore, the individual processes of the participants are addressed. 

Description of the 5 modules:


Way inside -connection to our body

Bonding & Relationship

The resonance principle - The voice as a relationship instrument


Connection between vocal apparatus & womb space - function of the larynx.


by Stephen Porges - Regulation of the autonomic nervous system


Boundaries inside and outside

In addition, the Safe and Sound Protocol

Sound treatment with Integrated Listening Systems (iLS)

The approach of “Integrated Listening Systems (ILS)” coined by Prof. Stephen Porges complements both behavioral and pharmaceutical approaches with the so-called “Safe-Sound-Protocol (SSP)” by working on a physiological level with several sound concepts developed over 20 years of research. This requires the “thinking brain” to be present while “exercising” areas of the older parts of the brain (subcortical) and body involved in regulation and information processing


The participation in the training includes the sound treatment SSP (Safe and Sound Protocol), which should be done during the voice training program if possible. A later implementation is possible in principle. 

Start and duration of the voice training program:
The 4th run will start on 19.09. 2021and ends on 31.03.2022 (2 weeks longer because of the Christmas vacations). 

Target group:
This program is for women!!! It is aimed at those interested, as well as singers, voice teachers, actresses, artists, amateurs and also self-employed women who use their voice professionally, who want to stand on stage or speak in front of groups. No previous experience is needed.

Conditions and costs:
The voice training program can only be booked as a whole. During the program, a cancellation is not possible.

The voice training program costs 799.00 Euro plus 19% VAT. 

In addition, 5 hours of individual coaching are mandatory for the training. These cost 550.00 Euro gross. 

In addition comes the Safe and Sound Protocol. This costs 120,00 Euro gross.

The total cost is 799,00 Euro plus 19% VAT 151,81 Euro, plus 550,00 Euro, plus 120,00 Euro = 1620,81 Euro TOTAL.

After booking you will automatically receive a booking confirmation with an attached invoice as PDF zugemailt. On the invoice you will see the bank details. We no longer work with third-party providers, such as Paypal, Klarna or credit card institutions, but only offer payment by bank transfer. 

The amount can be transferred in 3 or 6 monthly installments. In this case, an agreement must be made before booking!

The price of the voice training program increases from the 4th run to 1,699 euros plus 19% VAT!

Please read the AGB`s before booking!!! Without declaration of consent of the AGB`s a booking is not possible. With the booking you enter into a legally binding contract. 

Click here for direct booking:

2nd part: advanced training "The polyvagal theory in functional voice training".

In this continuing education we focus on controlling our voice or larynx. While there are singing schools that claim that the larynx is not controllable, therefore seems to be willfully uninfluenceable. When we train the muscles of vocal function and they work in coordination with each other and there is an interplay between the muscle systems and the vowels, we not only learn a natural and healthy vocal function, we also regulate our autonomic nervous system with it. In addition, there is functional LISTENING. This has to do with reclaiming self-empowerment. This requires anatomical knowledge of the muscular culture of vocalization and its nerve supply. This means that with this knowledge we also regain control over our voice and larynx, just as we regain control over our lives when we regulate our autonomic nervous system. This not only has an impact on our singing and speaking that thus happens with less effort and pressure, it also has an impact on our psyche, which primarily affects our voice. 

The continuing education consists of 5 modules. The modules are conducted live online. 

The advanced training takes approximately 8 months to complete. 

Description of the 5 modules:

Basic course I:Theory

Polyvagal theory according to Steven Porges.Connections between body and brain.Trauma traces in the brain, body and mind.Loss of self / ego.Finding one's own voice. How does the autonomic nervous system work.The importance of the vagus nerve. Reaction of the psyche to the musculature and the connection to the autonomic nervous system.Effects on health and immune system.The existence and need phase according to Lisbeth Marche (Bodynamic).

Basic course II: Theory

Anatomy of the musculature for vocalization.Laryngeal innervation: the arytaenoid muscle system / cricothyroid muscle system.What nerves supply the laryngeal musculature and what neural connections exist to brain areas.The influence of frequencies and rhythm on the ear and skin affecting the polyvagal nervous system.Anatomy and importance of the middle ear musculature. Anatomy and significance of the inner ear.The effects of our first contact and bonding experiences on the ear and voice.Conscious control over an involuntary muscle system.Reclaiming control and self-empowerment.Activation of the ventral vagus nerve.Parallel muscle systems and parallel processes - psoas muscle.

Practitioner Course I: Putting the theoretical content into practice

Training of the muscles for vocalization. Arytaenoid muscle system / Cricothyroid muscle system training in connection of the vowels. Activation and energization of the ventral vagus nerve. Work with reflexes. Releasing congested energy.rhythm and regulation. Feeling the sound. Increasing life force and sound energy. Self-regulation - self-organization of the voice. The relationship between teacher and student / co-regulation.

Practitioner Course II: Putting the theoretical content into practice

The importance of hearing. The feeback loop between the middle ear and the larynx. A broken resonance is restored. The individual and the authentic voice. The artist as vessel. The Safe and Sound Protocoll by Stephen Porges.


The highest art form: improvisation and song singing.Working on songs you bring or free improvisation.Concluding with a streaming concert.

Basic Course I

Basic Course II

Practitioner Course I

10/16 – 10/17/21

Practitioner Course II

11.12. – 12.12.21


12.02. – 13.2.22

Optional additional course:

Practical work with ensembles, orchestras, choirs.Together or against each other?The collective nervous system.Co-regulation within a group.Music is communication.The polyvagal theory in working with groups.

This course is a face-to-face event. Currently, face-to-face events are not possible!

The courses are all live (online) and with a maximum of 8 TN to be able to respond individually to each participant.

The courses usually start at 10:00 and end at 18:00 or 20:00. Depending on the process, it can also be later.

For participation is a good wired (no wifi) Internet connection, a good microphone (external) and if possible, an audio interface, a prerequisite!


Conditions and costs:
The advanced training “The Polyvalent Theory in Functional Voice Training” can be booked as a whole and in this case the participants get a discount. Graduates of the voice training program will receive a higher discount. However, it is also possible to book the modules individually and choose from different date offers. During the advanced training a notice is not possible.

With a complete reservation the advanced training costs for graduates of the Voice training program 1,050.00 euro gross. For other participants, a complete booking costs 1,150.00 Euro. For bookings of the individual modules, the training costs completely 1,215.00 Euro.

In addition, there are 5 hours of private lessons / coaching, which are mandatory for the training in the 2nd part. These cost 550.00 Euro gross. 

The total cost of the training is 1,050.00 euros plus 550.00 euros individual coaching = 1600.00 euros TOTAL.

After booking, they automatically receive a booking confirmation with an attached invoice as a PDF by mail. On the invoice you will see the bank details.

The amount can be transferred in 3 or 6 monthly installments. In this case, an agreement must be made before booking!

Please read the AGB`s before booking!!! Without declaration of consent of the AGB`s a booking is not possible. With the booking you enter into a legally binding contract. 

Click here to book for the 2nd part:

3rd part: supervision, theoretical and practical examination

The participants commit to logging 6 self-conducted individual sessions. They participate in 4 live sessions of Ms. Hammermeister explaining why she is leading which exercises. In these sessions there is interaction with the participants of the training. There is supervision. In addition, the participant conducts 3 live sessions in which Ms. Hammermeister and the training group observe the process and provide feedback afterwards. These sessions are counted as a practical exam.  In addition, there is a theoretical exam in which the participant answers questions about the theory.

It is important that the TN learns how his client hears. This work is based on hearing.  

This part lasts about 5 months and takes place once a month on a Friday and Saturday. 

Conditions and costs:
Prerequisite for the 3rd part is to participate in the Voice Training Program and the advanced training “The Polyvagal Theorem in Functional Voice Training”. In addition, there are a total of 10 individual sessions conducted by Ms. Hammermeister. 

The cost of the 3rd part, including supervision, practice and examination fees is: 500.00 Euro gross. This amount can be paid in 2 monthly installments.

The start of the 3rd part is expected to be February 2022. Booked out!

Further information:

For the participants of the training there is a dedicated Telegram group, where participants can exchange ideas or even for joint practice. In this group, participants are informed about the latest scientific knowledge, so that they are informed about the rapid development and changes, including new vocal exercises. 

Aims of the training:

  • The basis of this voice work is based on LISTENING. The participant learns to listen to how his client / student hears himself.
  • The participant learns in which state his autonomic nervous system is and with which voice exercises to change these states based on predetermined hierarchies (evolution-based nervous system).
  • The goals of the training are to perceive and hold their own rhythm in connection. 
  • To be able to use frequencies and rhythms specifically for reconnection with one’s own voice and self.
  • To hear one’s own rhythm and tones again, which have a strong influence on the autonomic nervous system.
  • To reconnect art with healing and spirituality, to see it as something holistic.
  • To lead the artist into artistic and personal freedom.
  • To unfold the creativity of the artist.
  • To promote and develop the self / individual. 
  • To participate in the development of a new musical aesthetic

Structure of the training:
The voice training program is for private use and focuses on the experience and development of their own voice. Only participants in the training are authorized to use voice exercises shown to them via the streamed videos professionally to gain experience and try them out. However, this does not give them a teaching license. This is only done by receiving the certificate. For participants who only take part in the voice training program and do not complete the training, it is prohibited to use the voice exercises for their work. With booking of the voice training program, a declaration of consent of the AGB`s, in which this is fixed, takes place. 

The participant / participants who decide to take the training, is the implementation of the Safe and Sound Protocol, preferably during the voice training program, mandatory. In this case, costs of approximately 120.00 euros are added. 

The advanced training “The Polyvagal Theory in Functional Voice Training” includes more the teaching of anatomical knowledge, also concerning neuroscience. This is about the effects of trauma on the body, nervous system, brain and mind, and what cross-connections there are to the voice. In the practical work with each individual, the participant learns to activate the middle ear muscles through hearing, replacing the Safe and Sound Protocoll. In addition, there are feedbacks between hearing and voice, which are learned through practical voice exercises.

The last part is about the participant learning to implement his acquired knowledge and experience in the work with individuals. This requires a very good ear.

Teaching materials and copyright:
For the first and second part of the training, the participant receives a separate workbook or teaching materials, which may not be reproduced or used for their own professional purposes. This also applies to pictures. For teaching materials there is trademark protection at the Patent Office Munich. 

Training duration:
19 months

Number of participants:
The number of participants is limited to 8.

Total costs:
3,600.81 Euro gross
120.00 Euro plus Safe and Sound Protocol
3. 720,81 Euro

Installment payments are possible in principle after prior consultation.

When the theoretical and practical examination is passed, the participant receives a certificate as an educator with the designation “Neuro-functional voice training©” according to Iris Hammermeister” and a teaching qualification. In addition, after passing the exam, the TN are included in a directory, which can be viewed on the website. This ensures that the listed persons, actually the training completely went through and thus are also qualified with individuals to work. Only people with a certificate get a teacher’s permit. 

The participant has the opportunity to write a thesis on a topic that is discussed with Ms. Hammermeister. It should be approximately 20 – 50 pages. With this diploma the participant receives recognition by the Polyvagal Institute (USA), which certifies this training. If the diploma is passed, the participant can carry the title Dipl. Neuro-funktionale(r) Stimmbilder(in). 

The Institute for Applied Improphysis® is so far the only institute in Germany and internationally, which has developed a voice training or vocal pedagogy based on the Polyvagal theory. In addition, the institute is currently undergoing a certification process by the Polyvagal Institute (USA), so that the training and further education courses are recognized by the Polyvagal Institute (USA). The training and education are in accordance with the latest scientific findings. Mrs. Hammermeister is involved in research projects and in exchange with scientists from Germany and abroad. Participants who receive the certificate with teaching permission and the diploma after passing the theoretical and practical examination have thus undergone a unique training, which is very forward-looking and in demand.

More information in the free online live seminar:

The free live info webinar is aimed at those interested in the training. You will receive more information and are welcome to ask your questions.

For those interested in the voice training program, there is the possibility to participate alternatively in this webinar, as the voice training program is presented in the first part.

It starts at 18.00 and lasts about 2 hours. 

Technical requirements:
Stable and good wired internet connection (No wifi!). Good microphone. All participants are visible and audible. Therefore, participation is only possible with working camera and microphone!!! The event will not be recorded for privacy reasons!


Iris Hammermeister

Iris Hammermeister is a classically trained singer, vocal coach, trauma and systems therapist. She has spent many years researching how first contact and attachment experiences affect our voice. This included polyvagal theory according to Steven Porges. The autonomic nervous system and the formation of the voice cannot be separated. She sees this knowledge as having incredible potential for singers and artists to gain the path to freedom. 

In the meantime, she is an internationally requested expert and a leading specialist who likes to share her unique knowledge with other experts. She has been researching for many years around the topic of voice in connection with trauma and is in constant exchange with leading scientists and internationally recognized vocal educators.

Her exceptional listening skills are appreciated by many participants who now attend her courses from all over the country and abroad.