"Can you describe tone placement?" she was asked.
"For the deeper tones--as one makes them--they seem to come from lower
down: for the middle and higher tones, you feel the vibrations in facial
muscles and about the eyes, always focused forward, just at the base of
the forehead, between the eyes. It is something very difficult to put
into words; the sensations have to be experienced, when making the
tones. The singer must judge so much from sensation, for she cannot very
well hear herself. I do not really hear myself; I mean by this I cannot
tell the full effect of what I am doing."