Baby Einstein Roll & Explore Symphony Ball: * Colorful musical ball features 12 classical melodies * As the ball rolls, the tempo of the melodies speed up or slow down with the speed of the ball * 3 play modes: * Music — melody tempo changes with the speed of the ball * Composer — add or subtract instruments to create a unique melody * Discovery — discover instruments and colors in 3 languages * Discover fun animal sounds, instrument names and colors in English, Spanish and French * Push buttons on top feature dancing lights and activate additional instrument sounds * Stimulates fine and gross motor skills and sensory development * Requires 3 AA batteries (included)