I have no qualms with modifying the classics to better suit my world view. Roast Beef becomes Tofu. Baa Baa Black Sheep says "No sir, no sir." And yes, Old MacDonald owns a farm sanctuary. That's why the animals are always so happy.
So here's Anna singing part of our modified Old MacDonald.
Then she sings a bunch of other songs. Sometimes when she sings the ABCs she stops at G and says, "Where was I?" I'm sure it's something I did once a few months ago and she thought it was funny.