Singing must not be forced but rather allowed to happen by means of getting free of extra doing, getting free of conscious breath control and understanding the interaction between the body and the mind. More
Human voice is a psychophysical phenomenon. Singing can be considered as a continuous muscular movement. The elasticity, mobility and tension-free action of the muscles of the entire body are the essential prerequisites of easy, natural singing. Stress and anxiety, stiff postures and conscious attempt at muscular control will impede the ease of performance. In brief, don´t do the singing, let it happen.