Don't ya wish they still made commercials like this? (1978)

It was not uncommon back in the day to find musical ads for fast-food restaurants such as McDonald's or, in this ad, KFC (Kentucky Fried Chicken), which went by its full moniker back then.

KFC and Burger King both used singing cashiers. In this case, KFC had the advantage with actress-singer Debra Clinger (The American Girls, The Krofft Supershow) singing lead here.

I listed both series because we don't know when this ad was shot.