Htydjtk

What more is known about the Japanese mythical and folk origins of the Wedding Chant in Making of Cyborg, the main theme of Ghost in the Shell?

Making of Cyborg is the amazing main theme and first chant of Ghost in the Shell (1995). (Lyrics at the bottom of the question)

YouTube: With lyrics, Live Version. (Yes, the first video is Reincarnation, the third chant, not Making of Cyborg, the first chant, but it is exactly the same until the 4 minute mark where it adds a single line repeated thrice: "The distant god may give us the precious blessing")

The entire soundtrack was made by Kenji Kawai. About all the information I can find on it is limited to this:

The main theme from GitS is actually a traditional Japanese song about two lovers meeting under a full moon, sung in a Japanese key but in the style of Bulgarian folk singing

_{cyberpunkdreams - Reddit}

If I recall the wedding song was used only in the intro to signify the "marriage" between man and machine.

_{IfTheseTreesCouldTal - Reddit}

It is said to be in ancient Japanese. When was it created? Is it still used as a wedding chant to this day? How popular was it and/or is it as a wedding chant? Is a specific traditional wedding dance being referenced?

What is the story behind the chant and which god is referenced?
The first YouTube video has comments which say that the chimera bird referenced is the mythical Nue, and that the chant is based on a Japanese folk tale, but doesn't say which one.

Further, regarding the the Nue chimera claim: "Since the people of the Heian Period regarded the sorrowful sounding voices of this bird as an ill omen, they were considered to be a wicked bird, and it is said that when the emperor or nobles heard its crying voice, they would make prayers that nothing disastrous would happen." The claim the chimera bird is the Nue doesn't seem to fit in with the lyrics or this being a wedding chant.

I'm amazed that it's so hard to find more information on such a famous and iconic cyberpunk's main theme.

Note: I'm not interested in the Bulgarian folk harmonies in this question.

(Note: There's also the question of whether I should ask this on SciFiF or Mythology. Perhaps I should see if I get an answer and if in a month or two I don't then I should ask the Moderators to migrate to Myth? But me likes being on SciFF more 4 this 1, narf.)

Lyrics (English Translation)

Because I had danced, the beautiful lady was enchanted

Because I had danced, the shining moon echoed

Proposing marriage, the god shall descend

The night clears away and the chimera bird will sing

[The distant god may give us the precious blessing]

Lyrics (Original KanaKanji)

吾が舞へば、麗し女、酔ひにけり

吾が舞へば、照る月、響むなり

結婚に、神、天下りて

夜は明け、鵺鳥、鳴く