For the last couple of days I'm listening to the top hits records from the 60-70-s. Some of then sound amaizingly good comparing to later CD-s. And you can hear how music, poetry and mentality changes every 10 years. IMHO those changes do not come to the better. In 60-70 poetry was about love, in 80-90 it was about sex, and in 2000 and later it is often about f..k...