The great music and culture critic Terry Teachout talks about how there once was a shared middlebrow American (and presumably all-Western) culture. The average person knew the themes from classical music highlights. So a university band could play one of the movements from Scheherazade, and not the most familiar one at that, and be appreciated. Here is a recording of that phenomenon.
Whether the disappearance of a shared culture is a bad thing is open to debate. On the one hand, the status of women has vastly improved since 1970, a date that makes a good dividing line between the old culture and the new. On the other hand, multiculturalism could lead to the death of Western civilization. All this follows from one band recording one piece of music on a custom record label.