At the same instant that I force the breath against the chest, I place the tone under its highest point on the palate, and let the overtones soar above the palate—the two united in one thought. Only in the lowest range can the overtones, and in the highest range the undertones (resonance of the head cavities and of the palate), be dispensed with.
With me the throat never comes into consideration; I feel absolutely nothing of it, at most only the breath gently streaming through it. A tone should never be forced; never press the breath against the resonating chambers, but only against the chest; and NEVER hold it back. The organs should not be cramped, but should be allowed to perform their functions elastically.
The contraction of the muscles should never exceed their power to relax. A tone must always be sung, whether strong or soft, with an easy, conscious power. Further, before all things, sing always with due regard to the pitch.
In this way the control of the ear is exercised over the pitch, strength, and duration of the tone, and over the singer's strength and weakness, of which we are often forced to make a virtue. In short, one learns to recognize and to produce a perfect tone.
In all exercises go as low and as high as the voice will allow without straining, and always make little pauses to rest between them, even if you are not tired, in order to be all the fresher for the next one. With a certain amount of skill and steady purpose the voice increases its compass, and takes the proper range, easiest to it by nature. The pupil can see then how greatly the compass of a voice can be extended. For amateurs it is not necessary; but it is for every one who practises the profession of a singer in public.
For a second exercise, sing connectedly two half-tones, slowly, on one or two vowels, bridging them with the auxiliary vowels and the y as the support of the tongue, etc.
Every tone must seek its best results from all the organs concerned in its production; must possess power, brilliancy, and mellowness in order to be able to produce, before leaving each tone, the propagation form for the next tone, ascending as well as descending, and make it certain.
No exercise should be dropped till every vibration of every tone has clearly approved itself to the ear, not only of the teacher, but also of the pupil, as perfect.