Singers and teachers should be encouraged to experiment during the course of their work, and to savour sound for the sake of it; they must enjoy learning to ‘taste’ tone with their ears, like a discriminating winetaster who, rather than being bent on discovering his favourite red, learns to distinguish different qualities and characteristics in wines which are equally enticing.

Harrison, Peter T. “The human nature of the singing voice: exploring a holistic basis for sound teaching and learning.” (2006).