Most of the places I sing in public i *cannot* use a crib sheet - and I don't *like* to use them even when I can - It's frustrating that I can sing something word perfect in the car - or at home - or in a friends living room and not get it right elsewhere. (or when that mic is in front of my face)

But I do use them.

since I sing unaccompianied I don't have the luxury of "vamping 'til ready" or throwing in and instrumentel bridge.