One piece of enchanting music...
I can't tell whether this was a piece composed by Popol Vuh or if it was even an excerpt from an opera, and it was so enthralling that it's nagging at me.
It's a scene after one of the Indians is crushed by a log, and then the rest of the tribe mysteriously disappear overnight; Fitzcarraldo is seen holding his head in his hands, sitting on a log amidst the mud; the camera also pans across the canopy for a while.
I would say it's approximately between 1h45m and 1h50m into the film.
It would be interesting to know who made it and what it's called.