Sergio Iglesias is one busy DJ. It seems like just about every night of the week, he's playing crazy cool retro music somewhere in town. On second Sundays of the month at the Knockout, he cohosts "Lonely Teardrops," the only all-doo-wop night in S.F.; on third Tuesdays at the Casanova, he offers the Ronettes, the Crystals, and other "Girl Groups"; for fourth Mondays at the Casanova, he drops boogaloos and cumbias at "Latin Fever"; on third Fridays, he spins bubbly French pop at "Ooh La La" at the Paradise Lounge; and for the last Friday at the Knockout, he delivers rowdy R&B, soul, and surf during "Teenage Dance Craze" with Russell Quan. There's no '60s genre this French dude doesn't know, and there's no better place to sample his sweet 45 collection than at his weekly Wednesday Delirium gig, "It's Monkey Time."

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