I'm with you buddy, I don't listen to the radio anymore, and I most certainly could cause I drive for 9 hours a day, during the week.
Yes the 70's was the decade for bands especially for rock. The early 80's saw the emerging electronic music. Of course the '60 influenced the '70 especially when the 3 minute radio time mold was broken for long play songs.
I think we can credit Hey Jude for that, IIRC at 6 minutes long.
