This is a Wooden Marble Track with Xylophone in one. Let the 3 colored balls roll over the 6 beams and admire the rolling movement. When the balls are almost down, you will hear the cheerful sound of the xylophone. Or do you want to hear the music more often and only let the balls roll over the colored bar of the Wooden Marble Track with Xylophone? Suitable for children from 2 months.