It's for the new Martin Solveig track 'Hello', which features Martina from Dragonette on vocals. Last year Martin and Martina teamed up for 'Boys & Girls' and Martina appeared alongside Jean Paul Gaultier in the extraordinary video; one year on Martina's taken a back seat but Bob Sinclar does appear, along with tennis players Nocak Djokovic and Gael Monfils.
The video (we're basically copying this straight off an email now) was filmed live in front of a real audience at Roland Garros during the French Open.