Mega Bloks First Builders Billy Beats Dancing Piano 3 modes of play: Dance with Billy, Teach Me and Free Play 8 colored light-up keys that can play single notes or 8 pre-programmed songs Sheet music on stickers included to let you build and stack a song to follow along Cool Piano, Whacky DJ and Funny Animal sounds with On/Off switch Includes 8 First Builders blocks and 3 c-size batteries