1969 IHOP Commercial

As the son of an IHOP owner (now retired) and a former PT employee, too, I now see why corporate planning was light years behind companies like…say…MCDONALD’S! Check out this campy (disturbing?) commercial from 1969. I remember the blue roof, sign, and waitress uniforms. I always loved the food. But who got Alvin (or was it Simon or Theodore) to sing this ridiculous song?