Close Encounters Of The Third Kind Music Meaning

In close encounters of the third kind the aliens communicate with a sequence of 5 musical notes.
Close encounters of the third kind music meaning. The whole film is based around a simple five note motif which functions as a code heralding the interaction between humans and the aliens. The five musical tones in close encounters are in solfege re mi do do so as below. Close encounters of the third kind. The second do is an octave below the first.
According to the trivia section on imdb. Lacombe the ufo expert is shown in a conference room showing a sequence of hand signals corresponding to the notes. These are the tones and their corresponding colors that were bequeathed upon humanity by the extra terrestrials in close encounters of the third kind and then relayed back to those aliens via a synthesizer and colored light patterns and also a xylophone by a little kid. The transformations of this motif contribute significantly to the story line.
In close encounters of the third kind a musical motif takes on a pivotal role in the plot.