I really like the complexity of jazz, the emotional depth; I feel like there's no other music that's really as satisfying as jazz.

I go by the "Miles Davis school of production and band-leading", where you pick the best musicians you can, you provide them with a minimum of direction, and you just let the music happen. I've seen it work time and time again.

Jason [Moran] and John [Patitucci] and Eric [Harland] knew it was a Billie Holiday tribute. I'm sure they assumed it was going to be like another singer date, where we just have a bunch of charts and they write them down and they got paid and kind of moved on. There's nothing wrong with that, but it's not what I intended.

When I start working on a new album, I kind of stop listening to a lot of outside stuff just so I can kind of focus.

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.

The other songs [of Billie Holiday] - "Body and Soul" is like the standard - I also wanted some songs that I knew I would sound good on, as a producer. It's been the same nine songs since I debuted it back in 2012.

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.