The music for 'The Last Five Years' is like running a 26-mile marathon, and singing Sondheim is like ballroom-dancing up Everest.

'The Last Five Years,' we sang almost everything live. When we're in a convertible on the West Side Highway, there was no point - it's not going to be usable sound. But any time we were indoors, we were singing live.

I felt different at 29 because 29, to me, is 30. There are times when I still feel like an actual toddler in a grown-up - well, semi-grown-up - body.

The movie industry can be tricky and occasionally creepy, and I have this sense that the music industry is just shady as hell. I don't want to be a part of it.

There is a whole new breed of marathoner who wouldn't even have considered running something like a marathon. In the past, people ran if they were exercise junkies. The marathon held the ultimate challenge for them.

To me, running a marathon is one of the ultimate challenges in sport. And for her to do it that many times, wow, she is a strong person. She knows her body, and she knows what she is capable of doing.