He encontrado el artículo:
http://www.popmatters.com/post/189474-madonnas-rebel-heart-reinforces-her-relevance/
"Each Madonna release is held to the highest standard by professional music critics and die-hard fans. For better or worse, the Queen of Pop has an impressive legacy to live up to, and it is not enough for her to release a good pop album. She must release her best album every time, which is to say that each release must be trend-setting and iconic. This is why critics and fans were not too pleased with 2008’s Hard Candy and 2012’s MDNA. For other pop stars like Britney Spears or Katy Perry, these would have been solid albums, but for Madonna, they were lame attempts to appeal to the mainstream. This is obviously not fair, and such impossibly high expectations often overlook the fact that even Madonna’s lesser work is significantly more interesting than what passes for contemporary pop, but better this than to accept everything she does simply because her name is attached to it."