Adventures in Wonderland S01 E25 Up and Anthem

"Bring home fun-filled musical adventure into words and wonder!"

When the Wonderland national anthem is deemed unsingable, the Queen decrees an anthem-writing contest to choose a new one. The White Rabbit, who authored the original anthem refuses to write a new anthem. But the competition makes him realize that his song could stand a little improvement, so he decides to "change his tune".