Product Description:
 
Add the dimension of sound to your Quadrilla runs with a xylophone rail that plays a musical scale as marbles race over it. Build the layout pictured on the box and connect to an existing Quadrilla set. Listen as your marbles descend the xylophone rail. Reverse the direction of the rail to play a different melody.
 
Features:
 
Marble-run construction toy made with durable wood and non-toxic, water-based paints
Includes 2 distributor blocks, 2 stabilizer rings, 8 marbles, and one xylophone rail.
Xylophone rail plays as marbles run down
German-engineered design inspired by Da Vinci Circle
Helps to develop spatial thinking and an understanding of Science, Technology, Engineering, Art and Mathematics (STEAM) principles
 Praised by The Wall Street Journal as the perfect toy for teaching children how to code
Compatible with all Hape Quadrilla sets
 For ages 4+