PREVIEW When they founded Spundae in 1993, Peter Beckers and Guiv Naimi pioneered America's electronic superclub a full two years before New York's legendary (and sadly departed) Twilo. The duo managed to mix distinguished San Francisco talent — Jerry Bonham, Jondi and Spesh, Alain Octavo, Scott Carelli — with international superstars such as Pete Tong, Felix da Housecat, DJ Tiesto, Armin van Buuren, and Christopher Lawrence. After all the downs (a partnership-turned-rivalry with UK superclub Godskitchen, a stalled record label) and ups (an offshoot in Los Angeles, a partnership with luxurious Ruby Skye, international acclaim), Spundae stands firm as a distinctly American dance music bastion. Sasha and Digweed's upcoming stop in late April demonstrates Spundae's undiminished drawing power.

To celebrate 15 years of success, Spundae attracts (what else?) local and international talent for a two-day celebration. Qoöl masterminds Jondi and Spesh prepare the opening course of progressive house on Thursday, setting the table for two young coheadliners: Canadian Deadmau5, who creates a signature sound by pouring energy into coolly-synthed numbers and epic electro productions; and Brit James Zabiela, who combines glitchy effects and acid bass lines with nuanced drum patterns that betray a leaning toward intricate, sound-warping gear.

San Francisco takes the stage Friday, as longtime Spundae resident Alain Octavo and promoter extraordinaire Dr. Syd Gris fill the floors early with house and progressive trance. Reigning "Best American DJs" Josh Gabriel and Dave Dresden blend popular rock remixes, euphoric vocal tracks, and grittier, techno-based projections into a four-hour headlining set sure to showcase why they've become international favorites.

SPUNDAE 15-YEAR ANNIVERSARY Thurs/6, 9 p.m.–2 a.m., with James Zabiela, DeadMau5, and Jondi

and Spesh, $15; Fri/7, 9 p.m.–4 a.m., with Josh Gabriel and Dave Dresden, Syd Gris, and Alain Octavio,

$20 ($30 for both days). Ruby Skye, 420 Mason, SF. (415) 693-0777, www.spundae.com