The syndrome usually is the result of a good song being "done to death" by all and sundry, often a difficult song with a complex accompaniment being attempted by somebody who does not have the skill as either a player or a vocalist to be able to carry the song. After a song has got the reputation, certain people will never give a chance to anyone who does it well.
Unfortunately they are good songs, so members of the public who do not attend folk events on a regular basis will request them.
Sad but true.
Quack!
GtD.