The main difference I notice is that the music was actually pretty damn good. Now it barely qualifies as music.

We went from Louis Armstrong and Lionel Hampton and James Brown and Michael Jackson and Stevie Wonder to ... at best, some pop singer with a decent voice and a lot of autotune, but mostly garbage rap with repetitive "sprinkler" beats that isn't even interesting rhythmically.

Hell, even early hip hop wasn't completely terrible.

Note: modern mainstream white musicians aren't much better.