Jay Z surprises J. Cole at birthday show

Rap mogul Jay Z made a surprise appearance at J. Cole's birthday gig in New York City on Tuesday (28Jan14).

Cole performed at the Big Apple's Theater At Madison Square Garden on the night he turned 29, and he was treated to an appearance by Jay Z.

At the end of Cole's show, the Big Pimpin' hitmaker thrilled the crowd by joining him on stage, performing Public Service Announcement and F**kWithMeYouKnowIGotIt and then handing his hip-hop protege a special birthday present.

Jay Z presented him with his own, original Roc-A-Fella Records gold chain and Cole appeared overwhelmed by the gift, according to the New York Post.

He later expressed his thoughts on the event in a one-word post on his Twitter.com page, writing, "Unreal".

Cole was joined by another special guest at the gig, his friend Kendrick Lamar, who also performed a number of tracks, including m.A.A.d city, with the birthday boy.