Once again people have retreated behind straw man of their own construction - ie glass ceilings, elitism, etc.
The question from the point this thread veered from club manners to club standards was this;

SHOULD PEOPLE WHO ARE UNABLE TO HOLD A TUNE, MEMORISE A TEXT WITHOUT THE AID OF A CRIB SHEET OR INTERPRET A SONG TO THE EXTENT OF COMMUNICATING IT TO THE LISTENER BE ENCOURAGED TO SING IN FRONT OF AN AUDIENCE?

Simple as that.
Jim Carroll