If you look at the other singers of Billie Holiday's time, they were really trying to entertain. They were trying to make people feel good. They were singing fast - and she was singing the blues.

For better or for worse, I think my approach to jazz is very traditional, in one sense, but is [also] very out of fashion today. It's about the musicians, and it's about that magic that happens in the moment.

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.

[Billie Holiday] was keeping it super real, and you can feel that to this day. Everything that she sang, she believed in. So I had to pick songs that I felt the same about.

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.

I also tried to focus on songs that Billie Holiday wrote, songs that she had a hand in shaping, like "Strange Fruit"; songs that were written for her or songs that she wrote herself, like "Fine and Mellow" or "God Bless The Child."

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.