Sang a capella by a group of about 25 seniors as I graduated from high school and forever ingrained in my head as one of the best songs ever.
Cons: References to drinking whiskey and the day that I died might be more than you want to sing to your little ones.
When my daughter was 2, she got this blue nightlight shaped like a bird. I changed the lyrics to "Blue bird" to sing about the new light & haven't been able to switch back without her calling me out!
Cons: Seems little dark; it's not, but I don't care for singing about "dead" to my kids