We sing covered as soon as the soft palate is lowered toward the nose
(that is, in the middle register), and the resonance and attack are
transferred thither so that the breath can flow over the soft palate
through the nose.
This special function of the palate, too, should be carefully prepared
for in the tones that precede it, and mingled with them, in order not
to be heard so markedly as it often is. In men's voices this is much
more plainly audible than in women's; but both turn it to account
equally on different tones. This often produces a new register that
should not be produced. This belongs to the chapter on registers.
The tone is concentrated on the front of the palate instead of being
spread over all of it--but this must not be done too suddenly.