The proper coördination of all the parts of the physical vocal apparatus with the powers of mind and emotion, is what in the end constitutes the perfect singer, and that proper coördination has, as its first basis, a due regard for the physiology of voice-production as well, of course, as for the general rules of health. In Gilbert and Sullivan's "Mikado," Nanki Poo, hearing a tomtit by the river reiterating a colorless "tit willow," asks the bird if its foolish song is due to a feeble mind or a careless diet. "Is it weakness of intellect, Birdie," I cried, "Or a rather tough worm In your little inside?" But all that the dear little birdie replied, Was, "Willow, Tit Willow, Tit Willow." Colloquially expressed, what Mr. Nanki Poo asked the bird was as follows: "Being gifted by nature with a perfect larynx, which should enable you to sing beautifully, do you confine yourself to singing a colorless 'Tit Willow' because you don't know any better, or because you are attempting to sing on top of an improperly selected meal?" In other words, he put violation of the laws of hygiene by a singer on a par with idiocy. Thus, even from comic opera, in the performance of which most of the rules of vocal art are violated, one yet may gather certain truths--by listening to the words--provided the singers know enough to enunciate them distinctly. The physiology of voice-production not only offers a rational method, it also enables the student to guide his own development, to advance his physical welfare, and, because he knows the why and wherefore of things vocal, to perceive what is best in the performance of others and to profit by it. Moreover, correct method of voice-production is in itself a health developer, and a singer who is taught by it often is able to overcome the disadvantages of a poor physique; while a singer, originally of strong physique, may find himself physically weakened by the use of a faulty method. As between a person who employs a beautiful voice artistically and a person who sings less beautifully, relying chiefly on interesting personality and temperament, instead of on correct method, the former singer usually long outlasts the latter. In other words, genuine vocal art is the crowning glory of a naturally beautiful voice. CHAPTER II THE CHOICE OF A TEACHER Further observations of a general character may be allowed to precede a more detailed consideration of method.