"This thread is for musicals that sum up a decade, not musicals that were popular in that decade..." Exactly. Which is why I find it kinda strange.
RENT didn't sum up the '90s for me at all. It was more about the '80s with Jon Larson, and that brief time I spent hanging out with him and others in that group while we were all struggling in NYC in the mid-'80s. Still, I think of that as such a SPECIFIC experience for a relatively small group of "bohemians" living as artists in Manhattan. And I had just come from a college town in Kansas, where the world of "Rent" was as alien as that of "The Jetsons." Not exactly a global experience that would speak to all.
But I would be more inclined to pick musicals that were a product of their time, at the moment they made their big splash on Broadway. For that, I would say Rent was "the musical of the '90s" even if it didn't really summarize the '90s at all.
I would also say "A Chorus Line" was THE '70s musical (on those terms).
Hair was THE '60s musical.
Not sure if there was a '50s musical IN the '50s that summarized the '50s.
I'm gonna stop now because, for me, there are too many caveats in this thread.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22