In his interesting work, _The Singing of the Future_, Mr.Ffrangcon-Davies insists that, "the quickest way to fine tone is through fine pronunciation." We cannot think except in words, nor voice our thought without speech.
Vocal utterance is thought articulate.

Therefore, instead of prolonged attention to tone itself, training should be concentrated upon the uttered word.

The student should aim "to sing a word rather than a tone." Correct pronunciation and beautiful tone are so interdependent as to be inseparable.
The singer and speaker require all sounds in their purity.

To seek to develop the voice along the narrow limits of any single vowel or syllable, as for instance the syllable _ah_, is harmful.

Not only is this vowel sound, as Lilli Lehmann says, "the most difficult," but the proper pronunciation of all words within the whole range of the voice is thereby impeded.