Hey now, John Waters admits to requesting songs on the radio so he could tape them off the air and that was the late 1950s. (reel to reel is that old).
I should be more clear. I only really care about the indie stuff, as commercial stuff is so overproduced, it is hard to find music in there (oversimplifying of course).
I haven’t listened to chart toppers since Led Zeppelin was topping the charts back in the day - with the one exception when the Grateful Dead hit the charts entirely by accident with Touch of Grey.
Not too many mandolins heard on pop radio either :-)