This year, OutKast’s magnum opus “Hey Ya!” turns 20. That means that for the past two decades the world has been shaking it like a polaroid picture to “Hey Ya!” But what does the song really mean?

In The Number Ones, I'm reviewing every single #1 single in the history of the Billboard Hot 100, starting with the chart's beginning, in 1958, and working my way up into the present. Look, I get it.

“Hey Ya!” is a song about losing faith; and after 2003, André 3000 seemed to lose faith in the power of the artform. “Hey Ya!”’s outlook on relationships is bleak. André looks upon the excitement and ...