I was thinking about your debate and wondered if you had missed something. There is a tradition in song writing of taking a phrase and making it evolve throughout a song so that each time it's used it means something different. In more formal music traditions it is often done on purpose. In Modern country music Tim Mcgraw wrote a song with the title "Don't Take The Girl" In three verses that phrase means three completely different things....a little boy doesn't want his dad to take the neighbor girl fishing....same boy and girl on a date in later years the boy tells a mugger to take anything he wants but "Don't Take The Girl" and finally in the last verse he begs with deity "Don't Take The Girl" because she has just birthed their child and isn't doing well medically. Though most "SErious" musicians won't admit it their formall structures usually imitate and borrow from the folk and oral traditions around them. It wouldn't be terribly surprising if some of the verses were added by different people with their own interpretations of what they meant. Maybe even on purpose to mean something different.    Anyway it was just an idea.