Ah......I remember it well.....Ewell. A folk club. I went along for a floor spot (remember them?) I was stopped at the door..."just wait a moment, please?" I waited the requisite moment and then the chap came back. "Sorry mate," he said, "They don't like the look of you!"
Seeing as they hadn't actually seen me...this was quite astonishing. Went to another club and had a great evening.!
One difficulty with this is that we can be put off songs completely by an inappropriate comment. I recall learning one specific song to perform at one gig, only to be told after wards that "so and so does a chorus after every verse." I've never sung it since. My bad, but the critic has to take some responsibility!