[1] Formed in 2005, the Complete Vocal Institute offers, multi-day, three month, one year and three year courses which have helped it grow into one of the largest singing and vocal institutes in Europe, with 528 authorised teachers to-date and thousands of graduates from over 30 countries worldwide.

[3] The educational book Complete Vocal Technique includes audio examples and exercises which have now been published in seven languages: Danish, Swedish, Finnish, English, Dutch, French and German.

Demand for courses at the institute have been periodically increasing making CVI, in both 2007 and 2008, among Denmark’s fastest growing companies.

Singers with a professional or semi-professional background can apply for admission to a number of courses of varying length and content.

After graduating as a CVT-teacher their typically teach at conservatories, universities, theaters, studios, music schools and privately.

Her first step was to understand the body and the vocal physiology and she experimented with producing the desired sounds in other ways than the already known methods.

She worked also with a range of professional singers to try out the techniques, when they wanted to produce specific sounds or had problems with their voice.

The work formed the basis for the techniques Complete Vocal Institute currently uses and Cathrine Sadolin has continued the voice research together with physicians and acousticians.

In addition to testing the techniques in a scientific way another goal is that an outsider will be able to identify the different voice modes on a purely objective basis, without prior knowledge of singing.