Zebra Board

It is a board. But you can't surf on it. It's black and white in colour. This board makes sounds. It has keys, but we can't unlock a door with them. You shouldn't bang it or it'll not make sounds. I call it the zebra board. The black board teaches us subjects, but this board is different. It teaches us music. 

DO YOU KNOW WHAT I AM TALKING ABOUT?

                                              IT'S A KEY BOARD! THE INSTRUMENT!!🎹🎹