Adventures in microtonality

From "Adventures in the Supernatural", the autobiography of Eileen
Garrett:

I had always like music until I began to study it seriously. I was
accused of singing off-key, and when I was requested to sing or play
a scale, I attempted to insert additional half-tones which did not
belong. I was repeatedly reprimanded for my failures, and when I
tried to explain to my instructor that I *heard* the additional
tones, she was indignant and sarcastic, suggesting that perhaps I had
a new theory of music to expound. Again and again she would
say, "Listen to this." She would play the scale over and over, and
then state with emphasis, "There are no other tones to be heard." As
she played those never-ending scales, I was slowly defeated. I heard
many other tones, and felt, with a kind of sad loyalty, that there
should be a place for them on the piano keyboard.