Do you know how to spell “bologna”? I do, thanks to the iconic Oscar Mayer bologna song, a nostalgic TV commercial that is forever lodged in brains like a blue Jolly Rancher lodged behind a molar.

If you’ve ever spelled out bologna without a second thought, you might have a certain jingle to thank. Oscar Mayer’s “The Bologna Song” first graced television screens in 1974, capturing ...