I feel like, in many ways, Billie Holiday's still very under-appreciated as an artist. People focus on her voice, and all of the very recognizable vocal things that she does, which are great. But I wanted to, with this project, start the conversation again about her as a radical feminist, as a civil rights activist - taking a stance. And also just [her] being a non-conformist.

I'm pretty much always planning two albums ahead.

The level of musicianship in New York is the highest in the world. It's tough to get into. You start gigging making 50 dollars a night, or playing for nothing to get to something. It's insane. It's like being a modern dancer, or something - the hardest thing to make money from.

I don't get writer's block. I don't try to write anything; when something comes, I write it. I just practice and when I get an idea I write it down.

Chico Hamilton told me, "The first take is important in jazz because that's where the real emotion is." That's your true response to what's happening, and everything else after that, your brain is involved because you have something to reference.

For me, the difference between a musician reading an arrangement on a piece of paper, and them closing their eyes and listening to what's happening around them and responding to it, is huge.

I really pulled from that repertoire that Billie Holiday was singing, and the way she sang it. It's sort of this beautiful, not really midpoint, but a period of her career where she really still had her voice. She had that deep wisdom that we've come to associate her with. To me, that's her at the height of her powers.