It's true what my Father told me long ago, that if you don't remind people every so often of how it used to be, then people will forget.
When it comes to music, most people only know a group by their greatest hits albums.
Like anything else historical, one must delve deeper than the surface to understand what something is all about.
Here is a random example:
True Beatles fans know the song well. People from that era at least heard it a few times... either at parties as part of the album, or on an FM station, when FM stations were cool and not top 40ish.
So much has changed in the world. Taking a step back now and then helps to understand where we were once and where we are going.