Did you know that objects vibrate when they are emitting sound? Did you know that the move in an exciting way, not visible to the human eye at first? In this demo, you will discover beautiful shapes and patterns made by vibrating and sound-emitting structures. You will learn what makes this 'art' appear and why engineers need to know everything about it. You will see a series of shapes - come and check if you can guess what you see next. It will be surprising, if not sometimes scary!