When people post a link to a song, there is no way to tell what kind of music it is or what period it’s from. To help engagement and the user experience, I suggest we require people to at least write the genre and year in the title of their post. Bonus points for adding some explanation in the body of the post about the significance of the song and why they’re sharing it.
You’re making some assumptions about how people operate that I’m not sure I agree with. But maybe you can make a different community - genre-specific or something. Or just live dangerously and click the genre-less links.