Climate change has always been sort of my main focus. I think also with [what happened in Fukushima, Japan] there's still a lot to think about in terms of what's coming down the pike into the world's oceans, too.

I'd be hanging out in my bathrobe all day, stinky, just writing, and my mom allowed me to do this-as long as I was writing songs. She said, 'As long as you're seriously working on music, I'll support you. Don't get a job, because if you work, it will crush you.

But I want to deepen as an artist, and working with Shakespeare definitely points in that direction.

I've written songs for Shirley Bassey, Marianne Faithfull, and Linda Thompson. I sort of focus on these wonderful, aging divas. But maybe that's because I think I'm Christina Aguilera.

Once illness strikes, you realize there's not a lot of time for you to do what you really need to do. And there's no time like the present.

When I was young, my mother [folk singer Kate McGarrigle] brought home this recording of Verdi's Requiem and we listened to it from top to bottom. By the end of it, I was a completely different person. It was literally a requiem mass for my former self. I was about 12 or 13. The Requiem just totally hooked into what I was going through emotionally - discovering my sexuality right at the time when AIDS was devastating my community and dealing with intense parental situations.

That will to love is very powerful. But it doesn't always win.