Luke is one cool dude. We invited the UK-based artist on the show to talk about his project "Play Me, I'm Yours," which installs pianos on street corners in a city, allowing anyone to play at any time. But then learned: he also designs hospital atriums. He creates glass sculptures with lightning. He sends hot air balloons up over cities to play music and inspire peoples' dreams. And he's colorblind. Jarret speaks with him about his artistic process, installing street pianos in Boston in Summer 2013, and the differences between foxes and hedgehogs.