Yeagh Ged sorry I wasn't clear enough there. I am not talking about unaccompanied. I'm talking guitarist/singers here. There is a regular at our club who plays guitar and sings with one of those Ipads for words/chords etc. He regularly stops at the first chorus mumbling "oh wrong key.....let's try again" and he restarts shifting the capo up and down the neck. I've seen others do similar. Yet all that is needed is to remember what key you sing it in; write it at the top if using a crib sheet; or save it in said key on your Ipod thing. It must be embarrassing as much as anything else. I sometimes sing unaccompanied myself so know what you mean.