How did the alien know the hand signals at the end of Close Encounters of the Third Kind?

In the last few minutes of Close Encounters of the Third Kind, the French ufologist Claud Lacombe does 5 hand gestures in the presence of a single alien. The gestures are supposed to represent the 5 tones played throughout the movie. The alien does some similar hand gestures in return.

I'm very curious if, within the movie, the alien was supposed to know that the hand movements represented the musical theme. Also, why would the alien have repeated those particular gestures, since humans were doing all kinds of motions with their hands prior to that? (To be fair, everyone except Lacombe was completely still during this exchange.)

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How do the aliens communicate in Close Encounters of the Third Kind?

Williams wrote over 300 examples of the iconic five-tone motif for Close Encounters\u2014the five tones are used by scientists to communicate with the visiting spaceship as a mathematical language\u2014before Spielberg chose the one incorporated into the film's signature theme.

What does the music mean in Close Encounters?

In Menotti's opera, music is the sole protection against the creatures from outer space. In Steven Spielberg's film, music is the sole means of communicating with the voyagers inside the space craft.

What happened to Barry from Close Encounters of the Third Kind?

After Close Encounters of the Third Kind, Guffey went on to get a degree in business and worked in human resources. A short time later he made the move into financial services. \u201cThe very first thing I did was replace my perfectly functioning car with a new Pontiac,\u201d he said.

Is there a sequel to Close Encounters of the Third Kind?

In February 1981 (six months after Columbia's desire for a Close Encounters follow-up had been fulfilled by Close Encounters of the Third Kind: The Special Edition), Columbia put the Night Skies/E.T. project in turnaround.

Close Encounters of the Third Kind (8/8) Movie CLIP - Contact (1977) HD

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