In this era of pop-diva overload it behooves each and every one of these women to distinguish themselves in a legitimate and interesting way; some of them have even done it. Lady Gaga has because a champion for freaks everywhere, Rhianna has tied herself so perfectly to Jay-Z that she’ll be famous as long as he is and Duffy? Well, remember that episode of Friends where Phoebe gets sick and she is suddenly a much better singer, so when she gets well she does everything in her power to get sick again? Endlessly sounds like that: like she tried to get sick to sound amazing and instead all she got was an annoying head cold that made her voice sound like some combination of Willow Smith and Fran Drescher.