Powerful shoulders which release the lips and the hands.
Playing music means holding your arms suspended in a relatively immobile position.
Your shoulders and your neck are tired, you are trying to release them.
It is a common leitmotiv but by « relaxing » them you tense them!
Because the weight of the arms weighs on the musculature of the upper back.
An excessive relaxation tires the neck which get tense and the respiration is limited
When you pull your shoulders back, a painful stabbing pain between the shoulder blades sets in.
On the contrary, “held and engaged » shoulders release this stabbing pain, relieve the neck, prevent compensations of the mask and the hands and increase self-confidence.