This party, which started as a no-frills fiesta in a Dumbo loft, has transformed into a weekly bash for New Yorkers seeking a blast from the past. The three local musicians behind the affair—who’ve established the legendary DJ La Boite as the event’s resident—united more than a year ago to spin funky boogaloo, psychedelic surf and trippy bossa nova, enough to get you go-going until sunrise. There’s never a cover—but there are plenty of groovy ’60s songs in Spanish or Portuguese. After breaking a sweat, you can wind down with a screening of an Argentine flick, often starring the sultry Isabel “Coca” Sarli, famous for making sexploitation films too hot for censors to handle. The weekly throwdown alternates between Williamsburg and the LES. Macri Park, 462 Union Ave at Metropolitan Ave, Williamsburg, Brooklyn (718-599-4999) • The Delancey, 168 Delancey St at Clinton St (212 254-9920, thedelancey.com) • Thu 10pm; free.