I've found that my older teens enjoy these "oldies" and have discovered them on their own. Sometimes I'll hear Patrick humming a tune and get an eerie feeling. That song is almost 30 years old!
Now, the music we used to listen to is called "Oldies." Which must make my own parents feel terribly, terribly old.
I came across this article today, which seems to indicate that children have some sort of instinctive memory of the music their parents, or even grandparents, listened to years ago.
I don't know that I buy this stuff, although when I was in college we were taught that each of us has within us a collective unconscious. We understand archetypes via the lens of our culture and more than that, through a psychic memory that's been passed down somehow (hopefully I'm relating that accurately).
Does that explain why my parents were never keen on Elvis, I positively hate his music, and none of my children have picked up on his tunes? Or is it simply that there is a "good taste" gene out there, undiscovered?