The Coppers sing from songbooks, though you'ld think they'd know the words of the "Wedding Song" and "Adieu Sweet Lovely Nancy" by now. But they are the Coppers and Gods can do what they like. Ordinary mortals should do their best to learn their songs. It's easiest for guitarists... those singers who hang their heads low and mumble have generally got cribsheets taped to the top of the guitar