I can only think of two:
How often have you heard either of these songs on the radio in - say - the last five years?
100 years from now, they will still be playing The Beatles.
What songs from the last 20 years will they be playing 100 years from now?
“...on the radio...”
What is this thing “radio” that you speak of?
In the 90's and early 00's I was on a Christian-only kick, which was fortunate because some of the best pop and alternative at the time happened to be Christian -- and it was probably the best Christian music ever, too.
Then the iPod came along and you know happened then...
Oh, wait, silly me - I do listen to the "radio" - on my iPhone. Jazz 88.3 out of San Diego. The best station on the planet. Got turned on to jazz -- the real deal -- thanks to them. About half of everything I've bought in the past two years I've heard on that station. So I guess radios not dead after all...