The other day I heard “Say It Ain’t So” by Weezer on the radio twice. It’s a song that I never skip over when it comes on; I very distinctly remember getting the Blue Album as a kid—it was the first thing I bought after I upgraded to a boombox with a CD player in it.

That was 20 years ago. That figure by itself is crazy to me, only because I can’t believe it’s been 20 years since I was in sixth grade. But it got me to thinking about a much more interesting fact regarding the history of rock music.