edm buds EDM Buds (L-R): David Guetta, Afrojack and Steve Aoki pause for a picture while the three of them brought the beat to Afrojack's Ultra Music Fest afterparty. (Photo: Rodrigo Gaya/World Red Eye)

After Madonna's appearance during Avicii's headlining set at Ultra Music Festival ended the day on a high, the party continued in the nightclubs of South Beach. Afrojack ( one of Billboard's 10 Most Influential Dance Music Executives) was listed as the headliner at newly renovated Washington Avenue superclub Mansion, but he wasn't the only mega-star in the DJ booth: Friend and early mentor David Guetta, and occasional collaborators Laidback Luke and Steve Aoki dropped by unannounced to play some of their big records for the rafter-packed crowd.

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driver Aoki In The Driver's Seat: Steve Aoki (left) cruises along at altitude as Afrojack (center) and David Guetta soak in the beat. (Photo: Rodrigo Gaya/World Red Eye)

With their significant others huddled around them - included Guetta's wife Cathy, herself a verifiable star in Europe; and Afrojack's current companion and rumored girlfriend Paris Hilton - the stars swilled drinks and mugged for the fans and industry-ites in the crowd. They included a crew from Ultra Records (home to Aoki), including label president Patrick Moxey, Director of Marketing & PR Samantha Mobarek, and General Manager David Waxman; head of William Morris Electronic Joel Zimmerman; and Donnie Estinopal from Insomniac Events. Ultra artist Kaskade also dropped by the booth to say hello, with his manager Stephanie LaFera from Atom Empire, an EDM-focused division of Atom Factory.

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signals Crossing Signals: Afrojack and David Guetta reach across each other to turn just the right knob at just the right time to maximize the wiggle. (Photo: Rodrigo Gaya/World Red Eye)

Zimmerman mentioned that he's working on a series of EDM-focused film projects, some with major studios, attempting to bring the lifestyle of the music to a broader audience. He hinted at a partnership with a marquis writer/director and one of his top artists, but declined to elaborate.

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Music-wise, the evening was a hit parade: Guetta dropped "Titanium," his track with vocalist Sia which Afrojack co-produced; Aoki and Luke unloaded their mega-bomb "Turbulence" (featuring Lil John), then jumped on the booth ledge and sprayed the crowd with champagne in time with the drop.

laidback Chilling Out: David Guetta with some-time collaborator Laidback Luke enjoying a rare down moment at the show. (Photo: Rodrigo Gaya/World Red Eye)