Around the 19 thirties, when electricity was more widespread in households and the real estate industry was ramping up, some door bell manufacturers were like, hey, what if you could design a door bell that didn't give you a heart attack? They actually advertised these new singing door bells like they were solving a major problem. And so the mullifluous door chime became a luxurious hallmark of a welcoming home. The door bell manufacturer new tone used the catch phrase a cheerful, earful. I thought that was kind of cus prk.