““I thought a voice had to be about what you could do. It wasn’t until I heard Billie Holiday that I realized a voice could be a collection of compensations for things you couldn’t do. It could be an ingenuity – in the same way some writers wrote books that coursed between the boulders of what they couldn’t do, and went faster, and tumbled over, fell in rills and rushed breathlessly over the stones. The great singers were also the great interpreters. She had just a single octave, and she made it her lifelong subject. I thought a voice had to be about your fluency, your dexterity, your virtuosity. But in fact your voice could be about your failings, your faltering, your physical limits. The voices that ring hardest in our heads are not the perfect voices. They are the voices with an additional dimension, which is pain.””