Hov popped up for a surprise performance at last night’s Youtube Upfront event. The fun took place at NYC’s Beacon Theater before a packed audience. From what I hear there were some serious characters in the crowd, going crazy.

Check out closer photos of Jay wearing the new Brooklyn Nets fitted hat after the jump…

Related: A-Trak Explains How Jay-Z Ties in with Fool’s Gold Records on ‘The Combat Jack Show’