One element of Madonna's career that really takes center stage is how many times she's reinvented herself. It's easier to stay in one look, one comfort zone, one musical style. It's inspiring to see someone whose only predictable quality is being unpredictable.

I think Kenny Chesney or Garth Brooks would be the coolest duet partners. I look up to them so much for their work ethics.

There's so much about Dolly Parton that every female artist should look to, whether it's reading her quotes or reading her interviews or going to one of her live shows. She's been such an amazing example to every female songwriter out there.

The colored folks been singing it and playing it just like I'm doin' now, man, for more years than I know. I got it from them.

Roy Orbison is the greatest singer in the world.

When we were kids growing up in Liverpool, all we ever wanted to be was Elvis Presley.