My own studies convince me that there is but one register, or, rather, no such thing as register, save as it applies to the compass of the voice; and that chest, middle, head, and all other registers are creations of false education. Training based upon the theory of many registers results in an artificial and unnatural division of the voice.
THE VOICE AND INSTRUMENTS COMPARED
The organ of the voice has long been considered the analogue of every other instrument except in regard to registers. Investigation indicates that it is analogous in this respect also. Compare the voice instrument with the pianoforte, violin, and organ and the similarity will plainly appear. The artificial instruments undergo no change when making a tone of higher or lower pitch other than the attuning of the vibrator to the pitch desired. All other parts remain the same. So when the voice is correctly focused and delivered, the only change incident to altered pitch is that made in the vibrator so as to give the proper number of vibrations for the pitch required. If the scale is sung down, using the same vowel sound for the whole scale, the comparison will be appreciated; the pupil will not be conscious of any change in the vocal organ or experience any difficulty in descending the scale. Faithful advocates of the theory of many registers say: "Whenever in doubt about the production of a tone, sing down to it from some tone above it, never upward from a tone below," for they find that singing down "blends the registers." This we believe is because in singing down muscular and nerve tension is gradually relaxed and consequently there is no "register" change in the voice.
A study of the church organ will, I think, make this matter clear. The organ has many so-called registers, as the vox humana, flute, oboe, etc. These differ in the character of tone produced, because of the size and shape of the different sets of pipes and the material, wood or metal, of which they are made. But each similarly constructed set of pipes forms only one register, and the pitch of the set varies from low to high without any abrupt change in quality. All the tones are produced by the same methods and means, the bellows, the vibrator, and the pipe. In length and diameter, the pipe is proper to the tone produced: a short pipe of small diameter for the high tones, and a long, wide pipe for the bass tones.
The short vibrations of the high tones are perceived by the ear as affecting the air only, while the tones of the lowest bass pipes shake the solid foundations as well as the superstructure. So with the human voice. The coarser tissues cannot answer to the short vibrations of the upper tones, because they cannot move so quickly, while they can, and do, respond to the vibrations of the low tones. This may cause some difference in degree, but not in kind. With all tones focused alike, the low tones of the human organ may be regarded as head tones plus the vibrations of the coarser tissues.
It has been said of registers that they are "acoustic illusions which disappear in the perfectly trained voice." As soon as the singer has learned to use his voice normally all these defective changes disappear.
TWO CASES
The following incident illustrates the fact that registers are an artificial creation: A young lady who had been a patient of the author since her childhood studied elocution in a metropolitan city, and to improve her voice took vocal music lessons of a teacher of more than local repute. He found no end of trouble in teaching her to "blend the registers," and she had utterly failed to acquire the art. One summer she came back for professional services and told her troubles. During the few weeks of her stay she followed the author's suggestions, and was fully convinced of their correctness and efficiency. Upon returning to her lessons, she followed, without any explanations, the method that had been outlined for her. Her success in "blending the registers" was a surprise to her teacher who heartily congratulated her upon what she had accomplished during the summer.
Another case is that of a young lady who was under the author's direction as to vocal culture from childhood. As early as four years of age she was taught by the use of a few exercises to focus the voice in the nose and head, and to recognize the head vibrations by a light touch of the finger. When about seven years old, she took ten lessons of a teacher on the same lines, and at fifteen years of age took another brief course. In the meantime she had only the practice obtained by singing with the pupils in the schools she attended. Later, of her own volition, she sang more, and carefully applied the principles she had been taught, with the result that her voice compassed nearly two octaves, evenly and smoothly, with no break or change of focus or quality, or other intimation of "register," and she developed a speaking voice of more than ordinary quality and resonance.
It has also been my lot to aid in the development of the voices of many patients after a surgical operation for cleft palate. Success has proven the correctness and efficacy of the principles set forth in these pages.