The Human Body in E-flat

Close Encounters of the Third Kind

I wonder if the writers/producers of this movie were saying that the sound of the body is pretty much e-flat with varying notes of chaotic energie fluctuations and that the aliens depicted in their 1970s special effects spaceship were saying "Hi" in human baby talk, which is the energetic equivalent of sound bytes? Whatever idea(s) the producers of this scene had in mind, the resulting film clip is too cool.