@Sheril Very much the opposite for me across all music - some of my favourite jazz music was recorded decades before I was born, and my favourite classical music was composed at least a century ago! But (as a 33-year old) some of my current favourite music was recoded in the last five years (especially funk, jazz funk etc.).
I'm nostalgic for the songs of my childhood and teens, but I cringe a little at what I was into! I got a lot of enjoyment from it and still do listen to some of it every now and then for nostalgia's sake, but I wouldn't rate it as really great music...
I suppose it could hold more if it's only talking specifically about the pop genre (although I still like stuff my Dad used to listen to when I was a kid from before I was born)...