It's always exciting when a world-class DJ hits the 'Nix for the first time; it does our egos good and quashes a bit of our desert metropolis' inferiority complex. So clap your hands and say "yeah" for this Saturday's inaugural appearance by U.K. producer and DJ BK, a.k.a. Ben Keen, at Swell Records' party Metropolis. BK, who's promising a three-hour set, is known worldwide as a sonic innovator in hard house music, evolving the genre with his injections of trance and techno. Joining BK on the roster is J. Scott G. of the production duo Deepsky (which has remixed A-listers like Madonna, Seal, and Paul Oakenfold), rocking his own DJ set. Also on tap are local beatmasters Inertia, DJ Nth, Sonique des Fleurs, Shane Silkey, Pepse, Nasty Nate, and Michael. The 18-and-over party, on Saturday, October 22, runs from 9 p.m. to 4 a.m. Tickets are $17, available at Swell Records. For the locale and other details, call the info line, 602-357-1072, on the day of the party.