As the respiratory centre is readily reached by impulses from every part of the body, like one who keeps open house, there are many different sorts of visitors, not all desirable. If, for example, a drop of a fluid that produces no special effect when on the tongue gets into the larynx, trachea, or lungs, the most violent coughing follows. This is one illustration of the protective character of many reflexes. This violent action of the respiratory apparatus is not in itself a desirable thing, because it disturbs if it does not exhaust, but it is preferable to the inflammation that might result if the fluid, a bread-crumb, etc., were to pass into the lungs.
In like manner, the deep breath and the "Oh!" that follow a fear-inspiring sight, a very loud noise, or a severe pinch of the skin, are examples of reflex action. They are quite independent of the will, though in some cases they may be prevented by it.
This reflex nature of breathing throws much light on many matters of great interest to the speaker and singer, some of which, as the formation of good habits of breathing, will be considered later. Unfortunately for the nervous débutant, his breathing is anything but what he could wish it. The pale face and almost gasping respiration, in the worst cases, are not unknown to the experienced observer. In such cases the preventive (inhibitory) influence of certain ingoing impulses is but too obvious. Such undesirable messages may pass in through the eyes when the young singer looks out on the throng that may either approve or condemn; or they may originate within, and pass from the higher part of the brain to the lower breathing centre. The beginner may have high ideals of art, and fear that they will be but ill realized in his performance. His ideals in this instance do not help but hinder, for they interfere with the regular action of the breathing centre. A few deep breaths after the platform has been reached greatly help under such circumstances. It is also wise for the singer to avoid those songs that begin softly and require long breaths and very evenly sustained tones. It is much better to begin with a selection that brings the breathing organs into fairly active exercise at once. One feeble, hesitating, or otherwise ineffective tone is in itself a stimulus of the wrong kind, sending in unfavorable messages which are only too apt to reach the breathing and other centres concerned in voice-production; but of this subject of nervousness again.
It is important to realize that sounds, whether musical or the reverse, are produced by the outgoing stream of breath, by an expiratory effort. Breath is taken in by the voice-producer in order to be converted into that expiratory force which, playing on the vocal bands, causes them to vibrate or pass into the rapid movements which give rise to similar movements of the air in the cavities above the larynx, the resonance-chambers, and on which the final result as regards sound is dependent. Important as is inspiration to the speaker and singer, expiration is much more so. Many persons fill the lungs well, but do not understand how to husband their resources, and so waste breath instead of converting every particle into sound, so to speak. After the larynx has been studied the importance of the expiratory blast will be better understood.
For the voice-user, it cannot be too soon realized that all breath that does not become sound is wasted, or, to express the same truth otherwise, the sole purpose of breathing is to cause effective vibrations of the vocal bands. In these two words, effective vibrations, lies the whole secret of voice production, the whole purpose of training, the key to the highest technical results, the cause of success or failure for those who speak or sing.
Before the larynx, the apparatus that produces sound-vibrations, can be effectively employed, the source of power, the bellows, must be developed. To some Nature has been generous—they have large chests; to others she has given a smaller wind-chest, but has perhaps compensated by providing an especially fine voice-box. Happy are they who have both, and thrice happy those who have all three requirements: a fine chest, a well-constructed larynx, and beautifully formed resonance-chambers. If with all these there are the musical ear and the artistic temperament, we have the singer who is born great. These are the very few. To most it must be—if greatness at all—greatness thrust upon them, greatness the result of long and patient effort to attain perfect development. Indeed, even those with the most complete natural outfit can only reach the highest results of which they are capable by long and patient application. Those who do not believe in attainment only through labor would do well to abandon an art career, as there is already a great deal too much poor speaking and bad singing.