The Cosmopolitan has locked in two of the biggest names in music for its New Year’s Eve blowout gala — Jay-Z and Coldplay. The collaboration, called Viva La Hov, will take place somewhere inside the yet-to-open venue, and the performance will be shown to Strip revelers on the hotel’s huge digital marquee. Want tickets? You’ll probably have to be a celebrity or a billionaire to gain entry to this ultra-VIP event.