Classic Rock Ain’t What It Used to Be. Here’s Why.

This is a simple question: what, exactly, is classic rock? What bands and songs fall under this umbrella? The answer gets more complicated every year.   FiveThirtyEight, the site that usually spends its time analyzing politics, underscores this point.

Led Zeppelin is classic rock. So are Mötley Crüe and Ozzy Osbourne. But what about U2 or Nirvana? As a child of the 1990s, I never doubted that any of these bands were classic rock, even though it may be shocking for many to hear. And then I heard Green Day’s “American Idiot” on a classic rock station a few weeks ago, and I was shocked.

It was my first time hearing a band I grew up with referred to as “classic rock.” Almost anyone who listens to music over a long enough period of time probably experiences this moment — my colleagues related some of their own, like hearing R.E.M. or Guns N’ Roses on a classic rock station — but it made me wonder, what precisely is classic rock? As it turns out, a massive amount of data collection and analysis, and some algorithms, go into figuring out the answer to that very question.

No one starts a band with the intention of becoming classic rock. It’s just sort of something that happens. Figuring out which genre a band fits into — is it techno or house? — has always been a tricky part of the music business. Identifying what’s classic rock is particularly challenging because it’s a constantly moving target, with very different kinds of music lumped together under the same banner. How the people who choose what music you hear — whether on the radio or an Internet streaming service — go about solving this problem reveals a deep connection between data and music.

The rest of the article is fascinating, especially for radio wonks.  Read it here. Note this chart that appearance in the story.