The Wubbulous World of Dr. Seuss (1996)

S01E18 Horton Has a Hit

Hearing Horton croon a lullaby to Morton, Yertle realizes Horton has the talent to reach the top—and bring Yertle along for the ride. Horton reluctantly leaves his suddenly-famous Morton in the care of Uncle Norton while he sets off on tour. But as the spotlight grows brighter, Horton begins to wonder: is all the fame and fortune really worth leaving home behind?