EveryThing: Jay Z Delivers Surprise Performance at Diddy's Bad Boy

 Jay Z may be one of the most famous rappers of all time, but he hasn't forgotten his roots.

On Friday, the 46-year-old "Holy Grail" rapper made a rare on-stage appearance in his hometown during the opening night of Sean "Diddy" Combs' Bad Boy Family Reunion concert at the Barclays Center in Brooklyn, New York

Jay Z shocked the star-studded crowd when he delivered a surprise performance of some of his hits, including "Public Service Announcement" and "Where I'm From." Mary J. Blige also made an unannounced appearance, joining Jay Z on stage to perform their popular '90s track, "Can't Knock This Hustle."

Many fans took to social media to share photos and videos from the memorable night.