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30 March 2015, 09:04
Sick moves, Bieb.
Justin Bieber joined Jack Ü onstage Sunday night at Miami's Ultra Music Festival. The DJs, who just put out their debut record as a pair, entitled Skrillex and Diplo present Jack Ü, teamed up with Bieber for on the record.
Bieber came onstage to do some choreography from their collaboration "Where Are U Now", along with P. Diddy and Kieszia.
Eagle eyed observers will have noticed that Justin posted a choreography video to Instagram last week which would have been a massive hint about the surprise performance.