Melissa & DougThis sound puzzle will motivate children to insert the pieces in the right place, because they'll be able to hear real musical instrument sounds! The puzzle contains 8 pieces on the theme of musical instruments; the child will be able to hear the piano, trumpet, drums, harmonica, tuba, guitar, violin and xylophone! The picture of the musical instrument is under the piece, and the puzzle is made of wood.Requires 2 AAA batteries (not included)Puzzle dimensions: 30 cm x 22 cm2+ years