As the festival itself had teased on its live stream all day, the last day of Ultra Music Festival had a big surprise. Apparently, Justin Bieber had been in Miami and wasn't quite ready to leave. Speculations started at early morning that he might be performing during Ultra, perhaps with Skrillex. Ultimately it was confirmed and thousands of ravers who thought they had grown out of their Belieber phase had to confront their own musical pasts as the pop star appeared on stage.
Bieber appeared on stage to perform his collab with Jack Ü, "Where Are Ü Now" and within moments, #ULTRALIVE was a global trending topic.