I also started writing songs because I had this burning activity in my heart and had to express myself.

I'm very intrigued that in this culture of reality television and celebrity - which is an enormous industry and generates billions and billions of dollars - we're so resourceful.

To try to help people have babies in a healthy way and to celebrate the process of delivering a child which will be healthy is, I think, almost the best part of healthcare.

If you come face to face with some really challenging situations and tragic circumstances - you are going in there with a purpose. You are not going in there as a tourist.

Music is an extraordinary vehicle for expressing emotion - very powerful emotions. That's what draws millions of people towards it. And, um, I found myself always going for these darker places and - people identify with that.

If you do nothing, if a mother doesn't come for care, if she breastfeeds her baby, the chances of the baby getting HIV are about 40%. So it's about the difference between 40% and zero. This is almost totally preventable. But it requires mothers coming for care and getting the medicines they need, and getting the education and support they need.

The world is a heartbreaking place, without any question.