If I see a kids record that I don't have, I buy it. This Mr. Rogers LP I got the other day has this King Friday track on it that kills. It's existential, sad, and loose. Hang in during the dialogue to hear him rock his Row Your Boat:
Propel, Propel, Propel Your Craft
Gently down liquid solution
Ecstatically, ecstatically, ecstatically, ecstatically
Existence is but an illusion
Please note: Mr. Rogers himself did the voice for King Friday. Below are some great Halloween costumes that some crazy guys made.