Melissa & Doug Musical Instruments Sound Puzzle - Wooden Peg Puzzle (8 pcs) - Wooden Peg Chunky Baby Puzzle, Music Learning Toys, Musical Sound Puzzles For Toddlers And Preschoolers Ages 2+About this item Place puzzle pieces correctly in the puzzle board to hear realistic musical sounds Lift to expose light sensor, then replace (cover sensor) to hear sound High quality recording sounds crisp and clear. Kid friendly instrument illustrations Encourages problem solving skills and independent play.