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Justin Bieber‘s manager, Scotter Braun, celebrated his 30th birthday in big style at the Music Box in Hollywood, Calif. June 18. Not only was the food and drink delicious, but some of his best friends showed their support by giving an intimate impromptu performance — and HollywoodLife.com has exclusive video footage from the mini-show, featuring Justin, Usher and Jaden Smith!

At first, Justin, 17, performed “Never Say Never,” with raps by Jaden — but then he launched into his biggest hit, “Baby,” and Jaden even rapped Ludacris‘s part! When Usher’s song, “Yeah,” started playing, Justin didn’t miss a moment before hopping on the drums and knocking it out of the ball park.