Chris Brown Takes Stage With Justin Bieber In Australia

Bieber's 'Up' remix partner surprised the crowd in Sydney on Thursday.

Rumors abounded in recent days that Justin Bieber would be canceling a scheduled Australian gig because of a back injury. Not only did Bieber not cancel his Thursday (April 28) show in Sydney, he even brought a special guest to the gig.

"I don't cancel ... In route to Sydney!! THE SHOW IS ON!! I don't let my fans down! LEGGO!! #myworldtour," he wrote on Twitter before the gig. "Sydney ... Leggo! #myworldtour"

Hours later, Bieber and his crew revealed to fans who couldn't be at the show that his "Up" remix partner, Chris Brown, had taken the stage with him Down Under. "@JustinBieber and @ChrisBrown just tore the stage down. INSANE. #MyWorldTour," music video director and Bieber insider Alfredo Flores tweeted. Fans then began to weigh in on the pairing, causing Bieber to retweet their kind praise for the performance.

"I feel bad for that stage cause I just heard @justinbieber & @chrisbrown just killed the stage! LOOK AT ME NOW!" AlexisDanielle6 wrote.

Another Belieber, annargh, added, "@JustinBieber that was the most amazing concert I've ever been to! You are so talented! THANK YOU FOR SHARING IT WITH US."

Bieber's manager, Scooter Braun, even tweeted a picture of the two performing together, writing, "Look At Them Now! @justinbieber and @chrisbrown 2nite in SYDNEY ... KILL'T IT!"

Bieber obviously had the final say, writing, "And they thought we might cancel tonight. Look at Me Now! I love Australia! #SWAG."

According to a report in The Daily Telegraph, the crowd of nearly 16,000 girls went mad as Bieber played on the latest stop on his My World tour at the Acer Arena. "By the time the countdown clock announced the arrival of the 17-year-old superstar, you would have thought these over-excited, sugar-fueled kids would be ready to relax and enjoy the show," the review noted. "Nope, they blew the decibel reader into the red — reaching 110 decibels between songs — the equivalent of a chainsaw. Ear plugs were a matter of survival."