On June 12, 2009, vocalist Bobby McFerrin participated in a panel discussion called "Notes & Neurons: In Search of a Common Chorus" at the World Science Festival. As part of the discussion, he performed an amazing feat -- he trained an audience, in mere seconds, to become a sort of human keyboard. In the video below, McFerrin points to the floor, sings a note, then makes the audience sing it. He steps to one side and sings the next note, and again, the audience sings it. The audience proceeds to sing... READ ON