I am of the persuasion that ...well..should is awfully harsh..but I like the songs best that do rhyme, and rhyme perfectly and the rhythm is very strict. I am far less concerned with the ...other stuff whatever it is. But in this case, if it bugs you, I would just not sing it because it is so in the oral tradition the other way. I would say oral tradition trumps rhymes but rhymes trump nonrhymes if you are say constructing a song. But do what you want. mg