FLEXIBILITY OF VOICE

We hear it continually said that it requires a special natural gift to acquire a certain ease and flexibility of voice, and that this natural gift is peculiar to the Italians. But the flexibility of the voice depends upon a physiologico-physical process of the organ of tone, which, among the Italians, goes on in their common speech, and hence is more easily transferred by them to their singing. In trills, roulades, turns, and all tones quickly succeeding one another, the breath must set the vocal chords vibrating in quick, short pulses. The little time used by the breath between these rapidly succeeding pulses to retreat, in order to give another pulse, suffices perfectly to produce easily and quickly the position of the glottis requisite for a higher or lower tone. In order, between the pulses, to give room to the retreating breath, the windpipe expands laterally, whereby the larynx is always somewhat drawn down, in order, with the next pulse of the breath, to take again its former place. This rising and lowering of the larynx can be seen plainly outside the throat, and it can be seen also whether the movement goes on rightly. Upon the degree of rapidity with which this movement goes on depends the greater or less flexibility of the voice.

But when the breath in exhaling presses in regularly increasing strength against the vocal chords, and one wishes to pass quickly to a higher tone and back again, as is required in trills, while the aerial stream continues to flow on with unintermitted force, it is evident that the changed movement of the glottis, even within the limits of a register, demands more time and muscular force than a beautiful trill or run admits of. But at the same time the limits of the tones become, by the uninterrupted stream of air, obliterated, and embellishments sung in this way, with unmoved larynx, indistinct. But ornamentation is now practised only in this latter way, and if pupils do not naturally move their throats correctly, the gift of flexibility is denied them.

A quite prevalent and likewise incorrect way of using the throat is moving the epiglottis with the larynx, which renders the formation of a clear, pure tone impossible, and fiorituri sung in this way are limp and indistinct. The only correct movement shows itself very plainly externally, so that with the tolerably strong movement of the larynx up and down, there can be seen also a slighter movement of the windpipe far below in the neck, about the breadth of two fingers above the breast-bone. The mouth and tongue, however, must be perfectly quiet.

But the cultivation of vocal flexibility in singing is the easiest and most grateful part of the education of the voice, for with ordinary industry on the part of the pupil results are here obtained most speedily. In the very first lessons I teach my pupils the motions of the vocal organ in trills, and if they do not learn them by imitation, I give them simple exercises on the syllable koo to practice for a while. The k is produced by a pulse of the breath, and the oo is, as we have seen, the best vowel sound with which to direct the breath as it is expired. Thus, by singing staccato the syllable koo, slowly at first and gradually quicker, with a movement of the larynx and windpipe that is both seen and felt; and with the tongue and lips at rest and motionless, the right movement is given to the organ in trills and all other embellishments, and by continued practice the movement becomes more rapid. Those who need to be taught this movement must never practice continuously for any length of time, for we must avoid fatiguing the organs. When pupils have become accustomed, by rapidly singing the syllable koo on each tone of the trill, to the movement of the larynx, then they can practice upon another syllable, and in the following way: Let the trill be at first always sung piano, with an accenting of the higher tone every time and a gradual increasing of the rapidity thus:

; also in half and whole tones, and then in minor thirds. But the most beautiful trill will be formed by practising triplets in the compass of a whole tone, then of a minor third, major third, fourth, etc., by which first the upper, then the lower tone is accented:

. The mouth, however, in this exercise must continue immovably open, and the tongue also must lie perfectly still, touching the lower front teeth, for only in this way can one be sure of not moving the epiglottis. Although this is difficult at first, yet the syllable ku (koo) may be sung in this way. Thus, with sufficient practice, any one may acquire a perfect flexibility of voice. When the pupils can make the trill easily upon the middle tones, in which in the beginning exercises must be practised, let them practice also upon the higher and lower tones of the voice. If the trill takes place at the transition of two registers, then both the tones must be formed upon the higher of the two, as in an exchange of registers the glottis requires more time than a good trill admits of.

Rapid runs downwards are easily executed correctly when care is taken that with every tone the same movement is made as in the case of trills, and the breath is kept back as much as possible. Voices wanting in flexibility may soon acquire the desired quality by singing every tone piano upon the syllable koo.

Ascending runs can properly be taught only when the descending have been correctly sung, for, in opposition to the former, every tone of the latter must be formed by a light impulse with increased breath. The softer the piano in which the pupil practises, and the more loose the consequent movement of the larynx, the more distinctly and the more purely will the pupil gradually execute these embellishments.

Intelligible as these movements are in practice, it is difficult to describe them. To be able to make all ornaments in singing beautifully and easily requires long practice, for in a thoroughly artistic piece of vocal music it is essential, as the great artist Schröder-Devrient said, that all the notes of ornamentation (Coloratur) should be like a string of pearls on black velvet, each distinct in itself, round and beautiful, and yet so connected with the rest in one whole that no gap is discernible. Carefully and correctly directed exercises in ornamentation are in the highest degree necessary to the formation of tone; they tire the voice far less than sustained notes, and accustom it to an exact enunciation of the tones. But because persevering practice is necessary to the cultivation of vocal flexibility, the teaching of this is to be begun at the very first; and not until later, when the voice is habituated to a right touch and to a perfectly clear tone, is the pupil to be given those favorite exercises with long-sustained notes, which are sung with one continuous breath. That we so rarely meet with clear vocal fluency is again owing to our mode of teaching. We do not seek to cultivate formation of tone and fluency at the same time. Oftentimes it is only after years spent in singing sustained tones that ornaments are allowed to be practised, and then, instead of using as little breath as possible, the flexibility of the larynx is hindered by singing too powerfully with full chest and unintermitted crowding of the breath. Without denying that in regard to vocal flexibility different individuals and nations may be variously gifted, it is nevertheless certain that with due practice every one may acquire more or less of vocal fluency.

Frederick Wiek has composed for his pupils a large number of simple exercises, in which all kinds of ornaments are introduced, and which at the same time are so melodious that they easily catch the ear. They mostly comprise only a few tones, at the most an octave, and are sung in half tones, ascending in different keys. Next to these exercises come, as highly adapted to the culture of vocal flexibility, the solfeggi of Mieksch, Mazzoni, Rossini, Crescentini, &c. There is, indeed, no want of excellent exercises and solfeggi. Their use, however, depends upon the way in which the teacher requires them to be practised. Notwithstanding the abundance of these exercises, I have always found it necessary to prepare special ones for my pupils, as every voice requires peculiar treatment and guidance.[ 15 ] In every pupil peculiar faults are to be overcome and peculiar qualities come into play, and the vocal organ shows as many differences as the human face. But the right way is sure to be found when the irreversible laws of nature, which lie at the foundation of our art, are once recognized. The practical advantages of this knowledge the singer, like every other artist, must endeavor to secure orally, that is, by sound instruction. Ornamentation, however, can become distinct and clear only by uniting these with a distinct, pure touch, as we have already endeavored to describe, when, with the beginning of the tone, the pitch is struck lightly, quickly, distinctly, elastically, with certainty and perfect correctness. But as it is by no means easy to introduce a tone quickly and correctly, so that it will sound equally pure from the first, this flexibility is extremely rare among our singers. Instead of it, the most hateful mannerisms have stolen into practice; the tone is struck too low, and forced up by an increase of breath, or the tones are so drawled one into another that one cannot tell where they begin or where they cease. Impure intonation is much more disagreeable in the high tones than in the low. This is quite natural; for when, for example, the low c is sung one-tenth too low or too high, then it will cause an octave higher twice as many vibrations, and two octaves higher four times as many, and these in proportion to their number produce a more intense effect. In the higher registers of the tones little discords (Verstimmungen) call forth a much larger number of beats (which are not to be confounded with vibrations) than in the lower, and thus the impurity of the musical intervals is felt much more strongly. Purity in the art of singing is, however, such a primal condition of its beauty, that a piece of music purely executed, even by a weak and slightly-cultivated voice, always sounds agreeably, while the most sonorous and practised voice offends the hearer when it is out of tune or forced upwards. The training of our singers by pianos, as they are now tuned, by equal temperament, is altogether unsatisfactory. The singer who practises with the piano has no safe principle by which he can measure the height of his tones with any exactness. But persons of good musical talent, made aware of this disadvantage by a competent teacher, and practising accordingly, can nevertheless overcome this difficulty caused by our present method of tuning, and learn to sing correctly and purely.

Until the seventeenth century, singers were drilled by the monochord, for which Zarlino, in the middle of the sixteenth century, re-introduced the correct, natural tuning. The drilling of singers was conducted at that time with a care of which we have now no idea. The church music of the fifteenth and sixteenth centuries is arranged upon the purest consonant chords, depending upon this for its whole effect, which would naturally be injured if not executed with perfect purity. Our opera singers now-a-days are seldom able to sing without accompaniment a composition for several voices so purely that its whole beauty is felt; the accord almost always sounds sharp and somewhat uncertain, and therefore cannot satisfy a really musical ear.