It is really nice not to need 'em...if you KNOW the song cold, you can concentrate more on delivery....however, I will keep a 'reminder' sheet near sometimes. The only thing that bothers me is people who simply do not KNOW the song and are stumbling thru it, inventing a tune and reading haltingly, just because they want their turn ( I see this a LOT!)...A cheat sheet should allow one to perform a song smoothly that they might otherwise mess up...like a song you have not done in awhile, but need to coax out for a special occasion, or a new song you are 'almost' sure of...........If you can't sing the song even WITH the cheat sheet, dont!