Slightly belated Happy Lammas

I come bearing something unrelated to the holiday, but Entirely Nifty: Bobby McFerrin at the World Science Festival. For those of you with video problems, I shall describe:

As part of a discussion involving neuroscience, he played a unique instrument - An Audience. He stood up, pointed at a spot on the stage, and sang a note, gesturing for the audience to make the same sound. He stepped to his left, sang a higher note. The audience got that right away. He stepped over again, they sang without his prompting, which caused laughter and applause. McFerrin then started bouncing back and forth between these arbitrary spots on the stage in different combinations, and even started singing harmonically with what the audience intoned, moving to new spots on the stage where the audience collectively pronounced notes they had not been specifically taught, but fitting into the pentatonic scale in perfect sequence.

When he stopped, he pointed out that any time he's done that with an audience, no matter where in the world - they always 'get it'.

Someone in the video's comments insists McFerrin 'stole' this idea from some Japanese researchers, and it has something to do with 'Raymond's Revenge', but I can't find that on Google anywhere. Gods forbid there might either be spontaneous identical conceptualisations, or that one might be inspired by another.