Although I'm no Rolling Stone (Mag) fan, here is a typical "All Time Greatest Hits" survey. You will see what I mean. Most of the great pop music comes from the 60's.
Rap killed it.
Although some of the hits on that survey belong there, I most vehemently disagree with many of their choices, especially their pick for #1, "Like a Rolling Stone" by Bob Dylan--a guy with no singing voice.