The words of a song stem from the cultural traditions of the singer or of the place and time that the songwriter want's to take you.

Your feelings about specific examples are related to your own cultural background and experience.

When, in England in the Fifties, I first heard 'Sing it Pretty Sue' the bad grammar sounded outrageous. Now, having mellowed for many years in a culture that contains much American Country Music I can sing it without the slightest cringe.

As for double negatives "Shucks; tain't nuthin'".

Bert.