Hape Quadrilla is a High Quality Wooden Marble Run Construction System. It provides QUALITY TIME for the whole family to play together. The BEST GIFT for your loved ones. It provides endless creative building possibilities and encourages spatial thinking and problem solving. Each of the seven different color blocks has a different function and it's the world's only kinetic marble run. Music Motion has won “Spiel Gut” (Good Toy) Award and Oppenheim Toy Portfolio Platinum Award. Providing over a thousand happy playing hours, Quadrilla is worth every penny. All Quadrilla marble run sets are crafted with heirloom quality birch and rubber wood for long-lasting marble racing fun. Hape Toy finishes are all non-toxic, child safe and of the highest quality. Hape constructs their toys using FSC accredited wood products. Hape toys stimulate children through every stage of development and help nurture and develop their natural abilities. All Hape products meet or exceed all applicable safety standards. This 97 piece set includes marbles, rails, and chimes for musical motion. Music Motion turns up the volume on classic Quadrilla marble runs by combining strategically-placed musical chimes with wooden rails and blocks. Music Motion by Quadrilla adds a musical element to the marble run formula. Music Motion includes little xylophone keys built into different building pieces, so marble run builders can get even more creative with their constructions. Set them up in crazy ways, or why not try having marbles play a tune as they roll down the raceways? Quadrilla's Music Motion can be combined seamlessly with Quadrilla's other marble run sets.