Meanwhile, over in the world of pop music, the marketing of sex has never been questioned as a way to sell records, and a new teen-pop act from Russia is provoking howls the likes of which haven’t been heard since Britney Spears first donned a schoolgirl outfit to pout and kick at the camera. But really, hasn’t pop pushed teen sexuality as far as it can go? What’s left to shock us? Well, meet Tatu, the teenage exhibitionist lesbian pop duo. Oh, and they sing, too.