Organizers are calling it "the biggest costume party in Long Island history," but the Oct. 27 "All Mixed Up" show, featuring Swedish House Mafia's Sebastian Ingrosso and pals Alesso and Otto Knows, will also be Long Island's biggest EDM event, the first DJ show to headline Nassau Coliseum.

Lou Branchinelli, the Fort Salonga promoter behind the sold-out Identity Festival at Nikon at Jones Beach Theater this summer and dance music events at numerous Long Island clubs, plans to transform Nassau Coliseum into "The Haunted Coliseum" for the Halloween weekend show, promising pyrotechnics, video walls and a fireworks show to welcome fans.

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Tickets go on sale through Ticketmaster at noon Friday. The pre-sale begins at noon Thursday, with details at

Considering how Ingrosso -- who recently hit No. 1 on the dance charts with "Calling (Lose My Mind)," which he co-wrote with Seaford's Matthew Koma -- sold out Madison Square Garden last year in less than an hour with Swedish House Mafia, expect tickets for this show to go quickly.