Singing in the car/Wednesday Adams strikes again

Sometimes my girls sing in the car:
The other day I looked back to see all three girls including the baby doing the chicken dance "da da dada dada dah, da da dada dada dah, da da dada dada dah, (clap clap clap clap)"
We've also had some beautiful harmonization. Sometimes Beth just harmonizes with the Radio, sometimes she puts an obbligato or other harmony over what the rest of us are singing. Leila can practically sing higher than the piano, so we have fun with that too. Hannah often joins in and certainly bops up and down along with any rhythm she can find (she's particularly partial to electric guitar).
I went visiting teaching today. As we drove along Hill street Leila sang the "we're going up" song from Playschool. That was fairly cute, appropriate and normal.
She also sang her own version of the "two little Dicky Birds" song... one named Peter, one named Paul. She named all her other fingers too, and then sang "DIE Peter, DIE Paul, DIE Alice...