Do you know the muffin man?

Lucy is singing "Do you know the muffin man" nonstop all the time. This is not a song that we sing very often at the house so this morning I asked her music teacher if they sing it at school. She said, "Yes, but Lucy doesn't. She just stands there with her hand in her mouth smiling." I told her that she doesn't stop singing it at home. She replied "I didn't even know Lucy really talked". That's laughable since anyone who knows her thinks that she talks nonstop. Ian actually refers to her "On" button that is pushed every morning and doesn't go off until she is sound asleep. That mouth just keeps going and going and going. I'm sure she'll warm up in music soon, until then, the teacher should enjoy the peace and quiet.