What do Abba, the Bee Gees and the Carpenters have in common? More than 800 million albums sold, non-stop hits. Despite this, the music press initially wrote disparagingly about them: Compared to rock, their sound was considered too slick, their outfits uncool. 40 years later, they are celebrated superstars. This two-part documentary, structured like a before-and-after report, tells the story of three bands who were initially despised for their music and performances, but today, decades later, are more than a cult.

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