Music is the soul-catcher. When we have nightmares or pretty fantasies, music calls it up and snarls it in the thread-count of our heart and mind. The nubbles on a well-worn sweater are nothing compared to the reaction of a concert crowd. I used to cut those nubbles off when i found them out, but now i wear them, not with pride, no, but with a certain self-satisfied awareness. plus, it can make holes in the garment, and while it doesn't make it unwearable, "It would be easier for them to hobble to town with a broken leg than with a broken pantaloon. Often if an accident happens to a gentleman's legs, they can be mended; but if a similar accident happens to the legs of his pantaloons, there is no help for it; for he considers, not what is truly respectable, but what is respected."
Ah, those standard Thoreau quotations, how you have explained so many of the questions i have had about life and the society of man, or rather the modern idea of a society.( And now this tanget curves back upon itself, making a two-leaved clover of thought.)
Ah, music. Not so strangely, though, the evolution of music has piggybacked on technology. The formative thousand years, where things were thought progressive, but comparitively, the common modern person usually cannot distinguish between those centennials, but can distingish between the relitavely recent ideas of genres, and even subgenres.
but this thought really isn't a good basis for scientific theories of society, the arts, and technology. Much more so would be a timeline comparision of the accepted ideas of society and class, thecnology and the impact of society and a flow chart of the genres of music and what they represent in societial rebellion.(which sounds like a paper i would not know how to start) despite what you may be thinking, science and music are almost co-partners in progressiveness, and have progressed because of the bastardization of the ideas of politeness in society. (Here is the third leaf stemming out from the center) Music is all about the society that produced the mind creating it, though, some exceptions do tend to be universal in their message. http://www.ubu.com/outsiders/365/2003/087.shtml
though, tumbledryers may not be that universal.
regardless, society and music, that requires thought and application to the society of self. What does your music say about you? What does the mind-warping array of genres say about society as a whole? What does the (nearly useless) extreme usage of the phrase "selling out" mean to about childish cliques whose attraction and repulsion of various artists depend on such a label? Why do you like the music you do? I find that pondering such things makes me rather thankful for my life, and for the wonderul artists whose ideas and dreams and been snarled in mine. (and now we have a lucky four leaf clover.)
(and now it's been devoured by a plague of locusts, locusts that you invite into your house for a cup of tea. insects don't make polite guests.)