Ultra Music Fest Heats Up With Electrifying Sets From Deadmau5, Hardwell

Miami music fest continues with an onslaught of talent and a cameo from a nearly naked Zedd.

MIAMI — With a late start and light schedule, Day 1 of Ultra Music Festival was the perfect setup to the full-on onslaught of talent of Day 2. No matter what stage you parked yourself in front of, you were treated to an all-star lineup and completely packed crowds.

The Main Stage was owned by 2012's Best Breakout DJ, Hardwell, who debuted a slew of new tracks and even invited Lil Jon onstage. Carl Cox killed it for a second night in a row at his eponymous curated stage, closed out by fellow legend Richie Hawtin. Meanwhile, the Ultra Worldwide stage saw a stellar cast — the best of the Dutchies, Italians, French and Aussies were treated to overflowing legions of fans, many wrapped in their nation's flag.

Skrillex label OWSLA took over the UMF Radio stage with newbies like Blood Diamonds and Seven Lions as well as stalwart favorites Jack Beats and Alvin Risk. Fans were not disappointed when the label maestro himself and Porter Robinson both joined Alvin for highly anticipated surprise cameos.

Not far away, their friend Zedd went streaking across the mainstage during deadmau5 set. Well, he wasn't completely naked. A Twitter dare between the German wunderkind and social media maven mau5 was sealed when he lapped the DJ's iconic cube seven times in nothing more than tiny pink briefs with matching suspenders and bow tie. Those tuning in to the live stream could catch only a distant glimpse but otherwise left to the imagination.

Zedd will return to the Main Stage to perform Sunday. And one can only imagine what fashion choices last night's antics will inspire.