When Justin Bieber appeared onstage at a Las Vegas nightclub last week for a surprise performance alongside a popular DJ, the crowd — and the DJ — went wild.

Gryffin, a San Francisco-born DJ and music producer, was performing at the XS Nightclub inside the Wynn Las Vegas hotel on Aug. 16 when he was told that Bieber was at the venue and wanted to perform,

Rather than trying to blend into the background, lest his cover be blown, the bootleg Bieber - believed to be one Dylan Desclos - decided to chance his arm and get his ‘team’ to ask the night’s DJ, Gryffin, if he could come on stage and sing Sorry ...