What songs are they singing?

After school today, Holly was talking about her friends and the names of their pets. Then out of the blue she asked me if I liked the name Eilene. In keeping with the current conversation I was thinking someone had a pet named Eilene or she thought it would be a good name for a pet. I said sure and then she said she thought I might like to change her name to Eilene. I thought about it for a second and then told her that I really liked Holly. Then I asked her where she heard that name and she said it was from a song. What songs are they singing in Kindergarten?