What is the Alexander technique?
"The Alexander technique is a way of learning how you can get rid of harmful tension in your body."* Although certainly not a full definition of the Alexander Technique, this is a good start.
A more complete description is offered in "Changing The Way You Work: The Alexander Technique":
"The Alexander Technique is a method that works to change (movement) habits in our everyday activities. It is a simple and practical method for improving ease and freedom of movement, balance, support and coordination. The technique teaches the use of the appropriate amount of effort for a particular activity, giving you more energy for all your activities. It is not a series of treatments or exercises, but rather a reeducation of the mind and body. The Alexander Technique is a method which helps a person discover a new balance in the body by releasing unnecessary tension. It can be applied to sitting, lying down, standing, walking, lifting, and other daily activities..."
"The Alexander Technique is an intelligent way to solve body problems." So begins an excellent article-length introduction to the Technique.
The Alexander Technique has a long history of helping instrumentalists and singers to perform with less stress and likelihood of injury. Musicians do some of the most complex and demanding physical movements of any profession. In recent years, the term Repetitive Strain Injury (RSI) has come into popular use, but musicians have always had to face the challenge of performing the same complex muscular actions over and over again.
By helping musicians improve the quality of the physical movements involved in playing an instrument or singing, the Alexander Technique also helps improve the quality of the music itself. A violinist's stiff shoulders and arms will get in the way of a pleasing sound; a singer's tight neck or jaw will cause the voice to become less resonant. By helping musicians release undue tension in their bodies, the Alexander Technique makes possible a performance which is more fluid and lively, less tense and rigid.
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Read this too:
https://www.alexandertechnique.com/articles/piano/-------------------------------------------------------------------
Daniel