Step to play music! Dance & Sing Key Board Step Musical Mat is an all-time favorite floor piano for kids! Step to play musical mat with 10 piano keys. The musical mat features 6 musical instrument sounds: guitar, harp violin, piano, trumpet, and xylophone. Have fun making, recording and playing back music! Bring the music band for your child, siblings and friends with this awesome Educational Toys Planet's piano mat. This all kids favorite foot keyboard is 51.6 x 18.9 inches. The musical mat requires 3 AA batteries (not included).