Kendrick Lamar has been having a blast on the road for his Damn. Tour, which also features Travis Scott and D.R.A.M. as opening acts. While the To Pimp A Butterfly rapper has put on a stellar show without any special guests joining him, his second Brooklyn, N.Y. show at the Barclays Center sees a surprise appearance from 2 Chainz.

Kendrick brings out the Collegrove hitmaker to join him onstage in the stadium arena, where he performs "4 AM" alongside Travis Scott off of his recently released Pretty Girls Like Trap Music album. Tity Boi gets met with a ton of cheers and applause while he performs the catchy record for the packed audience, while K. Dot serves as the backup hypeman for both of the hip-hop stars.

Chainz has already had a stellar year so far when it comes to his music career, as the rapper saw huge success with his most recent album. Pretty Girls Like Trap Music moved 106,000 units in its first week, with 57,000 being traditional album sales, and debuted at No. 2 on the Billboard 200 album chart. It also received about 69.5 million streams for its songs in the first week of its release, and was met with critical acclaim.

Watch 2 Chainz make a surprise appearance with Kendrick and Travis on the Damn Tour in the videos below.

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