"Push the 5 individual instrument buttons (harp, flue, french horn, piano, and violin) or the 1 orchestra button to play all instruments to create 8 Mozart masterpieces. The fun is in adding or subtracting an instrument without missing a single beat, and watching the lights flash to the tempo. The 5"" Sq. plastic cube has soft, protective rubber corners and quality speakers for safe and sound play. Uses 3 ""AA"" batteries (incl.). All ages.