>but radio also did a pretty good job of keeping that absolute tripe off the air. Good radio stations would also surface good local bands and cater to regional tastes.

If ever there was a more censorious medium, I have yet to see it. Not only content dictating _what_ could be played, it dictated _how_ it could be played. This wasn't just about contemporary HipHop and vulgarity - even instrumental songs like Nick Wrays' 1958 song "Rumble" were banned from radio play.

The list of songs banned by the BBC is a fantastic read

https://en.wikipedia.org/wiki/List_of_songs_banned_by_the_BB...