A clergyman's sore throat
The ailment known as "a clergyman's sore throat" is too common and too serious to be passed over—the raucous, husky voice sawn across the throat, the congested blood-vessels, the strained muscles, the throat lining as raw as a beefsteak. Here you have evident results of some unnatural effort. What is it? In ordinary conversation we employ the throat, back of the mouth and vocal chords mainly: very little demand is made on the lungs. The voice we use is the "head voice." Now, when called on to fill a large building, the centre of stress should instantly be shifted from the mouth and throat to the lungs. On them the whole weight should be flung—then you produce the "chest voice." It is the want of this transference of strain from the throat to the lungs that causes the misery called "a clergyman's sore throat." Men endeavour to fill a large building with precisely the same set of organs that they use when speaking by the fireside. The strain intended for the broad-based, strong-fibred lungs is kept on the delicate vocal chords, palate and throat. These were never built for that purpose, and nature kicks against the outrage. The throat becomes congested, parched, torn and raw; the voice grows husky, cracked, and finally ends in a scream. Here is the genesis of the fatal "clergyman's sore throat" explained.
An illustration
Analogy makes this clearer still. Our back teeth were built for the purpose of grinding; hence their broad crowns, strong shafts, and firm roots; the teeth in the front of the mouth were intended for tasks not at all so arduous. Tamper with this arrangement; transfer the laborious work of mastication to the front teeth, and see how nature will punish you. This illustrates the outrage committed when the strain and effort that should be shifted to the lungs are allowed to rest on the slender organs intended for the entirely different purpose of modulation.
How acquire a chest voice
One question remains—How can a person cultivate a chest voice? How bring the voice directly from the lungs without in the least distressing the throat? This is all important. The young speaker should practise for a short time daily the method of lifting, first, words and then sentences straight from the lungs without making the least possible demand on the throat or vocal chords, stealing each word out of the depths of the lungs, afraid, as it were, of awakening the upper organs. When he has acquired this habit of speaking words and sentences, let him practise a verse or two of declamation. In a short time he will be surprised at his progress in acquiring a chest voice. In public speaking it will become his ordinary voice; for not only does the established habit assist him, but the organs daily develop and fit themselves to his purpose, and he learns to transfer the stress from his throat to his lungs as easily and quickly and instinctively as the pianist passes his fingers from the treble to the base notes on the keyboard.
The test of any theory is—How has it worked in practice? The method of voice production here recommended has given the writer advantages that it would be difficult to overestimate. Lungs naturally weak grew to three times their former size and strength; his voice increased in depth, richness and resonance; though constantly speaking in large churches for years, he has never known what hoarseness, sore throat or huskiness is.
A method that to him has been worth untold gold may not be without advantage to his readers.
Resonance
We must, however, have more than speech; we must have musical speech. This is acquired by resonance and inflection.