LifestyleWhen Stones RockTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoLifestyle12/18/2017December 18, 2017They really are a "rock band": Small stones whirl through the air, driven by electromechanical instruments. They play the Beatles song "Here Comes the Sun."https://p.dw.com/p/2cAM5Advertisement