Not every Oldie is in a rut.
Not all memorable songs were Oldies hits and there are some incredible recordings by established artists that were not, but were later included on compilations of their works.
I get what this thread is for, but I have to quibble with the built-in assumptions as stated.
http://www.youtube.com/watch?v=BrioIotkTCU
You can try to knock it but anybody who listens without a built-in agenda and animus will not be fooled.
But I have a few friends and relatives who are just stuck in 1965-1980 and I have made it an avocation to try and open up their ears just a wee bit.