Bloody technology. I was just boring everyone rigid with the story of my life when I pressed the wrong key and my missive sailed into the ether incomplete.

Anyway, as I was saying.

Other mitigating cirmcumstances where use of a crib sheet might be permitted:-

1. I've been singing a lot of topical/political stuff lately, where there just isn't time to internalise the words, and the only thing to do is to read the words off the page.

2. Inexperienced singers sometimes find that singing from a sheet gives them a little bit of a boost to their confidence. Fine, so long as they regard it as no more than a prop, to be discarded as soon as they can manage without.