Play a jingle while you tinkle! The Potty Piano is a wrap-around musical mat that fits just about any standard toilet. Its great for the “regular” musician in your family. Even better, it comes with a hilarious songbook to get things moving. * great for slaying boredom on the pot * fully functioning keyboard with built-in speaker * includes hilarious songbook * (3) button cell batteries included * easy to clean (just in case) * on/off switch