I tend to number 2....I don't believe in changing the words willy nilly. Yes if they are racist or terribly offensive, but then with footnotes saying you have. No if you want to change from a man to a woman singing. That really bugs me. Then no one knows what the original was. of course they don't anyway. But it just sounds icky if you it is a common song and you hear different words. Yes if you can even out some rough edges I guess...when the rythm is way off...