Does anyone find that - whether they like it or not - the words get changed during the years of singing a song to fit in with one's own way of speaking? I wouldn't in the course of a normal conversation say 'doth' or 'thou' and when I look back on my singing of traditional songs that were acquired from written sources, the old words have evolved into more modern ways of speaking.
Is this betraying the origins of a song, or an unconscious act that helps to keep the song alive?