I actually started the whole project some years ago with a live debut at Ancienne Belgique in Brussels. The focus was mainly on my favorite period of Billie Holiday, which was the late-50s Verve recordings, with essentially a small version of the Count Basie band.

When I sort of step in my jazz world, it's somewhere between instrumental jazz and vocal jazz.

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.

All my stuff is pretty seamless - like now, while I'm touring [Yesterday I Sang The Blues], today I'm going to go in the studio, I'm writing my next one. For me it's continual.

[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.

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.

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.