Music Motion turns up the volume on classic Quadrilla marble runs by combining strategically-placed musical chimes with wooden rails and blocks. Run the marbles down the Quadrilla set and hear the magic music made by the six steps. Arrange the steps differently and create a new chime every time. Set up your musical playset any way you want as there are multiple ways to create fun music and sounds. For Ages 4 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs. CHOKING HAZARD -- Toy contains a marble. Not for children under 3 yrs.