The Tongue Position
In making the strident sound the tongue should rest in the same position as for the dark sound. The dark tone never changes and is the basic sound which gives fullness, foundation, depth to the ultimate tone. Without it all voices are thin and unsubstantial. The nearer the singer gets to this the nearer he approaches the great vibrating base upon which the world is founded.
Remember that the dark tone never changes. It is the background, the canvas upon which the singer paints his infinite moods by means of different vowels, emotions, and the tone colors which are derived in numberless modifications from the strident tone. Another simile may bring the subject nearer to the reader student. Imagine the dark tone and all the sensations in different parts of the body as a kind of atmosphere or gas which requires to be set on fire by the electric spark of the strident tone. The dark tone is all necessary, but it is useless unless it is properly electrified by the strident tone.