Research shows that approximately 50% of our communications is non-verbal. The remaining 50%–about 20% of this are the word themselves and 30% is the vocal quality.
As a singer, one would guess that the vocal quality adds another 20 to 30%. This means, your stage presence is about 20% to 30% of the value of your entertainment.
Singing and posture--see Categories, About, Launch 4-2014 