Justin Bieber makes unannounced appearance at SXSW

He appeared at his manager's label's showcase gig at Banger's Sausage House & Beer Garden

Justin Bieber made an unannounced appearance at SXSW over the weekend.

The pop singer appeared at the the Scooter Braun Projects Sunday Funday event in Austin, Texas on March 9, and sang a mash-up of songs that included his track ‘Boyfriend’, accompanied by the band Rixton, reports Digital Spy. Click below to watch footage of the performance, during which Bieber’s vocals battle against the sound of screams from the crowd.

The show happened at Banger’s Sausage House & Beer Garden. Rixton are on Bieber’s manager Scooter Braun’s Schoolboy Records label, alongside Bieber, Psy and Carly Rae Jepsen.

Last week Justin Bieber criticised his former mentor Usher in a leaked video of his testimony in a court case brought against him by a photographer. Bieber appeared at a court in Miami on March 6 to defend himself in a case brought by Jeffrey Binion. The photographer claims that Bieber ordered four of his bodyguards to forcibly remove the memory card from Binion’s camera after he took photos of Bieber outside recording studio ‘The Hit Factory’ in June 2013.

TMZ has released four clips totaling eight minutes from Bieber’s five-hour testimony. In one clip, Bieber is asked about his former mentor Usher, who played a prominent part in Bieber’s early career. “Usher? Yeah, that sounds familiar,” said Bieber. “I was found on YouTube. I was instrumental in my own career.” Another clip shows Bieber lose patience with Binion’s lawyer Mark DiCowden over questions about the singer’s relationship with Selena Gomez. He said: “Don’t ask me about her again,” before requesting to take a break from the courtroom.

Bieber is due to appear in court today (March 11) in a separate case. He was arrested on January 23 and charged with DUI after allegedly taking part in an illegal car race.