This unique peg puzzle plays classic nursery rhymes as the wooden pieces are put into place. Six pieces each play a different tune: Humpty Dumpty; Baa Baa Black Sheep; Hey Diddle Diddle; Mary Had A Little Lamb; Twinkle Twinkle Little Star; Jack and Jill. Plastic pegs make it easier for young children to grasp, and lyrics are included so kids can sing along! Wooden frame puzzle measures 11-3/4 x 8-3/4". For ages 2 and up. Requires AAA batteries, sold separately.