MIAMI – For three days, the Ultra Music Festival will be obsessing over Electronic Dance Music at Bayfront Park, 301 Biscayne Blvd. The EDM DJ invasion's lineup includes David Guetta, Steve Aoki, Röyksopp and Skrillex. A 3-day pass starts at about $450, and there were only a few left Friday at the Bayside Marketplace box office. The $1,150 VIP tickets sold out. Organizers warn EDM fans to watch out for fraudulent tickets out there.

• WEATHER: T-storms Friday, cloudy weekend >>>
  
• LISTEN:  UMF Day 1 songs on Hungama >>>
  
• WATCH LIVE: Twitch TV, 4 p.m., YouTube intro >>>
  
• GET SOCIAL: Miami's Lady Casa on Instagram >>>
  
• MEDIA UPDATES: Follow SnapChat UMF story >>>
  
• OPINION: Rolling Stone's 15 best EDM picks >>>
  
• iTUNES DOWNLOAD: Free UMF app >>>
  
• AFTER PARTY PICK:  E11EVEN, 29 NE 11 St. >>>
  
• THROW BACK:  Destination Ultra on YouTube >>>
  
• LOCALS PROTEST: Not a fan? Countdown >>>
  
• COOL VIDEO: Time-lapse of stage construction >>>
  
• 'LOL' MOMENT: NFL player 'twerking' on stage >>>
  

DAY 1 | FRIDAY PHOTOS

'UltraNauts' start EDM party with colorful selfies

MIAMI - The gates opened at 4 p.m. It rained about 6:15 p.m., and a bright rainbow was out over Biscayne Bay by 6:25 p.m. The cloudy weather wasn't stopping any UltraNaut from dancing. There were fireworks behind a stage, a variety of lights and plenty of confetti to go with the beats. There was a flood of joyful selfies on social media. And behind-the-scenes, City of Miami police and fire rescue were at work. WATCH REPORT>>>

USEFUL INFO | EXPECT HEAVY TRAFFIC

Biscayne Boulevard drivers rerouted through Monday

MIAMI - An altered traffic pattern in downtown Miami began Thursday night ahead of the Ultra Music Festival. It will remain in effect through Monday morning. WATCH VIDEO >  Plan your route and get latest alerts updates with Total Traffic map.  VIEW THE MAP >

• Aerial video shows Biscayne Boulevard traffic
  
• Ultra Music Fest vibe on downtown's Metromover
  
• This is the best way to beat the Miami traffic to UMF
  

CHANGES | SECURITY

Security plans tightens with lessons learned from trampled gate incident

MIAMI - Event organizers and law enforcement were tightening security.  WATCH VIDEO >   Despite a stronger fence, Joel Franco found a weakness. HIS TWEET > Organizers claim they learned many lessons, after a crowd trampled a security guard when they crashed a gate last year. READ THE STORY >  The security guard filed a law suit. WATCH VIDEO >

CHANGES | NEW RULES

18 and over only: Teens, kids no longer welcome at EDM party

MIAMI - Ultra Music Festival organizers were reminding ticket holders on Twitter that only clear bags were allowed in. VIEW PHOTO > Teens and kids are no longer welcome. Event organizers announced a new age requirement limiting entrance to visitors 18 years and older.  WATCH VIDEO >

EDM CULTURE | DRUG USE

Despite new synthetic drugs, UMF follows old Woodstock tradition

MIAMI - The escapism rituals of drunken crowd surfers and hallucinating dancers at music festivals were an issue in the 60s and are still an issue today. Year after year, government officials juggle economic interests with residents' complaints. READ MORE >

BEHIND-THE-SCENES | CO-FOUNDER'S DEATH

Ultra co-founder Alex Omes' death remains a mystery

Alejandro "Alex" Omes didn't show up to Miami-Dade County Circuit Court for the first day of a $33 million legal battle. His nightmare: he had been pushed out. After four years of fighting to get back in, he was finally getting his day in court. And he wasn't there. READ MORE >>

• Sunshine State of Mind community social media post