Listen to the story! Read the story! Sing the Story! âA is for Alligator,â includes the Read-along version of the story followed by the same story sung in an adorable song. âA is for alligator. B is for ball. C is for caterpillar. D is for doll.â From A to Z, young readers will learn different words that begin with each letter in this easy-to-read, alphabet rhyme. Each page includes capital and lowercase letters and delightful illustrations! The perfect way for pre-readers to learn the alphabet, identify letter sounds and explore alphabetical order.