Carlton Cards Heirloom Hanging Christmas Tree Musical Ornament. From ABC's Schoolhouse Rock Series, My Hero, Zero. Press a Star and You Hear this Childhood Favorite Tune. Ornament is roughly a 3 1/2 Inch Diameter Footprint. Musical Tested and Still Strong. Runs on three AAA Batteries that are not included. 2006 ABC Schoolhouse Rock Copyright on Box. In Original Box with Original Transparent Blister Packing.