This publication is an objective contribution to Guitar technique with a framework derived from a knowledge-base drawing on anatomic and physical factors. Instrumentalists make mistakes only when playing their instrument without conscious and mindful awareness. Any viable instrumental technique can only be based on natural movements executed without any cognitive feedback but with conscious proprioception. Stating that pre-tension is a precondition for any movement leads to the conclusion that the demand for 'relaxed instrumental playing' as such is paradoxical.