However, it IS in the surround audio of the DVD/Blu-ray! (hear attached)
CE3K_chant_thing.wav
So I just watched the short but interesting feature highlighting Spielberg's Super 8 footage shot during the making of the film, and there's a neat shot of Williams conducting the orchestra as they perform the cue known as 'Stars and Trucks'. But the neat part is seeing the footage they're scoring to. It's an unused transition that takes us from the deleted scene of Neary on the roof of his house looking skyward...then cut to Lacombe doing the same...then cut to the gate being opened for the government trucks to be let out. (see attached)
Stars_and_Trucks.mov