12 months & up. Bundled exclusively by Ditty Bird for customers here at Kaplan Early Learning, these musical books will brighten any day! Follow Ditty Bird on many musical journeys with 6 of his favorite instrumental songs and 6 of his favorite classical songs. Through these two musical books, children will discover great composers and classic children's songs. Songs include 'Twinkle Twinkle Little Star', 'Mary Had a Little Lamb', 'Fur Elise', 'Ode to Joy' and many more. Each book comes with three LR1130 batteries, instructions for replacement can be found on the back cover of the books. Includes 2 musical books.