Once I had the band, Jason [Moran] and John [Patitucci] and Eric [Harland] - it's very exciting to have that trio of just world-class guys - I already knew it was going to be fantastic. I didn't really tell them anything about it. They didn't know what they were going to play beforehand.

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.

There used to be a club in new york called Bradley's - I've never been there, it closed in the 80's - but I used to study with Junior Mance, and he would tell me about Bradley's. It was a very important place for a generation of jazz musicians in New York. It was really all about pianists there.

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.

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.

Once I had the band, Jason [Moran] and John [Patitucci] and Eric [Harland] - it's very exciting to have that trio of just world-class guys - I already knew it was going to be fantastic. I didn't really tell them anything about it. They didn't know what they were going to play beforehand.

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.