JANUARY 30

To admit you genuinely enjoy ABBA’s music is to admit you delight in being naughty—naughty like staying up past your bedtime or having an extra slice of pie for dessert. You know you probably shouldn’t, but you can’t help yourself. It’s inexplicable, but despite—or, maybe because of—the band’s bubble-gum beats and kiddie pool-shallow lyrics, ABBA still boasts a rabid following. More than 15 years after Agnetha and Bjorn—and Benny and Anni-Frida—divorced and the group dissolved, there are box sets, compilations, videos, ABBA-saturated Australian films such as Muriel’s Wedding, and—perhaps the greatest proof of ABBA’s timelessness—its very own tribute band, Bjorn Again. Not an exact replica (although it comes darn close), Bjorn Again is rather a distillation and intensification of ABBA’s essence. Swedish accents are heavier, sequins are shinier, and satin costumes whiter than you might remember them being, but everything oozes ABBA. You’ll get the hits (“Mamma Mia,” “Waterloo,” “S.O.S.”) and then some—campy bits between songs that send up the original band and its cultish fans. Don’t worry, though, Bjorn Again’s shtick never gets clogged with comedy, and the singing is always right on. No surprise, since BA has been at this game going on nine years now. Be forewarned—if the D.C. show has even a glimmer of the brio it did when I caught Bjorn Again in Montreal last year, the Bayou will be a swirling time warp of disco balls, flared pants, dancing queens, and super troupers. At 8 p.m. at the Bayou, 3135 K St. NW. $10. (202) 333-2897. (Roberto Aguirre-Sacasa)