Reference to Rock n Roll history is interesting. Each of us might have a different take on that. Significance for my generation is largely being overlooked (still) by our baby boomer parents through sheer numbers and control of the media as much as anything. These days when I hear a reference to the songs that defined my childhood, a small part of me cheers. Beach Boys, Beatles etc. are all very well but they're not really a part of my upbringing even though I respect their status as classic bands.
Disco rules, it defined my childhood and still defines my tastes.