Rarely does a further new version, changed to make it "theirs", so it simply isn't the same any more, come close to sounding as good to me as the one I first encountered and enjoyed. I think it is because a particular song/rendition is acknowledged as good that others consider it worth have a bash at, but it is the fact that it is good that means they simply fail to come to the same standard. They should look for a presently poor effort of something with potential to make their own.