This Fisher-Price Step-On Keyboard by Kids Station is 4 feet of musical fun! It has 19 Steps with 4 different modes : record, playback, demo and rhythms, and 8 musical instrument sounds. There are 10 built-in demo songs and you can also plug in your MP3 player to play along! Fun for ages 3 years and up. It helps develop imagination & creativity, self expression & confidence, and sharing & cooperation. It requires 3 AA batteries. (not included).