Concerning the posts upthread of the International and American tribal songs with vocal chants,
my favorite was orpheus10's posting of this Nordic piece:
https://www.youtube.com/watch?v=kprl0CECykAIt has that powerful and forceful nature to it as if she crying out from some pain or yearning in the center of her soul to the spirits of her ancestors.
Ennio Morricone, my all time favorite composer and arranger of film scores uses chanting in many of his most famous pieces such as these 3 from "The Good The Bad And The Ugly" being performed by the The Danish National Symphony Orchestra. the piece flows from the main theme (opening of movie) into the closest to the end when Tuco is racing around the cemetary searching for the grave full of gold.
1;
buono, il brutto, il cattivo (The Good, the Bad and the Ugly) Main 2: L'estasi dell'oro (The Ecstasy of Gold)
https://www.youtube.com/watch?v=KkM71JPHfjkAnd here is the last piece, performed by Morricone's orchestra for the original motion picture soundtrack complete with the scene. It's title is Morricone perfection: "The Trio"
https://www.youtube.com/watch?v=awskKWzjlhk