Millercarbon, every thing in the USA is in decline since 1960: I visited Detroit in 1965, and it was the most elegant city I have ever been to; it seems everyone drove a new car, and dressed in the latest quality fashions.
The first time I experienced "valet parking" was when we went to a nightclub to see Aretha Franklin; they also had hat check girls (just like in the movies), all new to me. I was taken around to visit some of the friends of my host, who lived in swell homes with "rathskellers", that was the term used for playrooms with bars.
Since I listen to what I consider the highest quality music available any time I'm woke, I consider this conversation quite valid in regard to the music; however, just citing the music would make one guilty of tunnel vision.