70s. Prog rock, and heavy metal, pushing the boundaries and definitions of rock and roll. Plus of course you have 1973. Quadrophenia, Dark Side, Aqualung, Houses...
71 was the best year for albums.
Led Zeppelin IV
Who’s Next
Sticky Fingers
Hunky Dory
Aqualung
At Fillmore East (Allman Brothers)
The Yes Album
+1
Well said.