Heard it through the Grapevine? Yes, I'd forgotten that one. Doesn't follow that younger generations know it though. I've heard of 'Sexual Healing', now you mention it, but I don't think I've ever actually heard it!
I'm sure given the general demographic on NSC most of us will have heard of Marvin Gaye. Doesn't say we all listened to him much. Apart from 'What's Going On' I'd have trouble naming any Marvin Gaye songs. Oh, and the one he duetted with Tammy Tirrell, whatever that was called.
As for younger...
Surely there should be some sort of statute of limitations or something on this sort of thing. Mavin Gaye recorded the song about 20 years before Sheerin was even born - is there any evidence that young Sheerin will even have ever heard a Marvin Gaye song, let alone copied it?
Still, if it's an...