Rock and roll came from the transistor radio.
When Sony launched its cheap portable radio more than sixty years ago, it came with a headphone. For the first time in history, teenagers could listen to music without their parents eavesdropping. This opened the door to Chuck Berry and then the Beatles.
AM radio needed hits, the top 40, mass music, and the Beatles made it work.
Steely Dan came from FM radio. Once the number of stations doubled, these new stations needed an alternative to the more common AM hits. And so we get the Doors and Jimi Hendrix.
Rap and hip hop had a hard time getting past the primarily white program directors, and it wasn’t until MTV began featuring it that it spread to millions.
And Taylor Swift and Elle Cordova would have had a hard time catching on without YouTube.
It extends far beyond music. The launch of the Gutenberg press changed the politics of Europe for a century, and the rise of radio in the 1920s did the same. The smartphone has transformed our discourse and created division in the same way.
We’re now facing the biggest shuffling of media in our history. The messages will inevitably change as a result.
Full credit to McLuhan.
https://seths.blog/2026/10/media-and-messages/