There's a Mark Levine book called 'The Jazz Theory Book.' I would suggest getting it and doing two pages a day just to study it and learn to read some basic piano, even if you can only pick out one note at a time. As you work through it you'll notice the way you hear and the way you sing will automatically start to change. It's like looking at the world and not knowing it's all blurry — you can make your way through, but then you get glasses and everything gets clearer and clearer. I think that's really important.”

Esperanza Spalding