You know, that was the first time [with Any Winehouse] that I probably ever used a baritone sax. And it's certainly the texture that, you know - it's all over the record 'cause it's a nice compliment to her tone.

D'Angelo could sing the phonebook and it would sound good.

So when I was working with Amy Winehouse on "Back To Black," you know, she had all these beautiful songs, incredibly well-written and just her on an acoustic, nylon-string guitar. And she'd play them for me, and then I would kind of drum up my idea of what I thought - make a demo with what I thought the drums should be doing, the guitars - like, quite a crude demo.

Basically, there's a good friend of mine who works at EMI Publishing, a publishing company. He had asked me - he was like, you know, do you know this girl, Amy Winehouse? She's in New York for a day. She's kind of meeting people to maybe work with on her second album.

So sometimes if I'm working with a rapper, like Ghostface Killah or Nas, producing usually means, in hip-hop, that you make the music. You make the beat, and you give it to them. And they write the rhymes.

And I remember that about three years before that, her first record had come out. And I just remember really liking this one song off it called "In My Bed" and being a little bit enamored. This, you know, this young kind of Jewish girl from North London, you know, I have the same thing - from a Jewish family from North London - with this incredible voice.

I think, you know, for me, whatever I need to slot into to make that music the best it can be or help the artists, or whoever I'm working with, achieve whatever vision they have in their head for a song.