Songs that have been created since the invention of writing may not have to excluded from "the 1954 definition," but anything sung or heard since the development of recording technology is definitely excluded.

I think that anyone alive today who believes that their favorite music is in any way "purer" or more "free of modern influence" than anything else is pretty much kidding themselves.

Of course, I have no problem with anyone having different tastes and standards from anyone else. But let's be real, and admit that the influence of recorded music ~ including, of course, recordings of traditional singing, both commercial and acacdemic ~ is part of everyone's experience today.