Paris pulls an artistic all-nighter

In today's show we meet the artistic directors of this year’s "Nuit Blanche" in Paris. The all-night festival transforms the city with installations, videos, and even fake purple rain accompanied by a Prince soundtrack. But first, we go behind the scenes to meet the woman who’s single-handedly made the harp cool: kooky Californian Joanna Newsom. Plus, artists open up their studios to the public in Paris's most creative suburb.