hI, dEaD hOrSe! I rest my case. No by-blows that way, Mrrzzy.
Perhaps the first song I learned in grade school. Along with "A capital ship...." Later, I often wondered where the teacher (she) had picked up seafaring songs; she gave us a lot of them (no, couldn't be!).
Perhaps she used them because chanteys have a beat and are easily remembered by kids.