As for using 'bits of paper' or guide notes, well what the hell so long as the end result i.e. the song/tune sounds good? Ok, so some won't, but not using crib sheets or notes does'nt mean a good or professional performance, whereas i've heard some great performances from folks using notes/crib sheets/music - and as has already been said poeple like Pavarotti (and most 'professional' symphony orchestras) do just that! So stroll on Johnny, use notes/guides/crib sheets where you have to and to those who won't book you, well sod em, its probably there loss eh?