David Ffrançon-Davies was a Welsh baritone and regarded as an authority on the voice. He studied under the tenor William Shakespeare, who himself was a student of Francesco Lamperti. In his book The Singing of the Future, he mentions an issue for students that strive to acquire resonance:

A very vital danger confronts the student at the start, viz., the danger of securing resonance rapidly at all costs. This resonance is often procured by an unnatural and distorted raising of the palates, and a forcible downward pressure of the root of the tongue. All such fictitious and forced methods of securing ready-made vocal vesture cannot be too strongly condemned. The texture of the voice must be slowly woven in the loom of time. It is wise to look upon the voice as an instrument, wiser to spend years in perfecting it technically, wisest to add to this the discipline of soul and intellect, so that the song which flows through that instrument shall possess all the qualities which go to make a great personality. The pursuit of technique, or mastery over the voice, will prove to be an intellectual and spiritual discipline, provided it be approached in the proper spirit.