@JustinBieber hopped behind the mic LIVE today at our #EDCWeek festivities! #DraisLV #EDCLV #Vegas

A video posted by Drai's BeachClub Nightclub (@draislv) on



No, it's not an acid trip, it's really Justin Bieber!

Music fans at the Electric Daisy Carnival got a surprise when Biebs grabbed a microphone at Drai's Beach Club in Las Vegas and performed "Where Are You Now."

The 21-year-old reportedly downed a couple shots of Jack Daniels and sang two songs for the crowd of about 3,000 EDM fans, according to DailyMail.


The pop star ran into Orange Is The New Black star Ruby Rose at the party and postetd a pic on Instagram. Oh, and JB got a new accessory to wear to the festival -- he thanked pal Floyd Mayweather for this new bling ... crazy!!!