"Optimist," by Zoe Keating

I love Radio Lab, all the stories and interviews they create are amazing, and keep me inspired when I'm working into the late hours in my studio.  I especially like it when they share music.  This is a great track, which you can download for free from their blog.

Zoe Keating is a friend of the show. We've performed live with her around a dozen times, give or take. And on our last tour (Symmetry), Zoe would often play this piece, Optimist, which she wrote for her son Alex when he was negative four months old. Every time, the audience fell into a trance. Those are the moments from the tour I really remember, getting to sit quietly on stage and watch the audience watch Zoe.