What is THE quintessential 70's song?

[The_Other_Waldo_Pepper]

From the thread six years ago, I quote myself:

@The_Other_Waldo_Pepper

I want a singer/songwriter’s semiautobiographical story-song, but make sure to (a) throw in a section with super-high falsetto, and (b) dwell on flying so hiiiiigh when I’m stoned; there’s a wild-man wizard hiding in me, illuminating my mind – oh, and figure the guy doesn’t get the girl in the end, plus kick the whole thing off by mentioning “Frisco”, with bonus points for working in just how far a buck went in the '70s.

TAXI, by Harry Chapin.