OK ok tl;dl to everything, but caught the gist.
Black people in Africa have incredible voices... believe me when I tell you, slap 15 black peeps between building and let them sing, it's gonna sound like 500 minimum. Put 500, gonna sound like the second coming.
10,000? Gonna almost break stuff. By voice alone. I know from experience.

I always wondered why they kept everything in song and instruments, as opposed to writing. I think it was just answered.

They knew better.

This is probably why the soweto quoir is so revered by Hollywood.

Theory: find all of these round thingies, put 100 blacks from africa innem, let them all sing the same song at the same time. New sun will be created. Context of song will matter.

Or we will all be destroyed.

Either way, it's something to do.

PS, tell him I say hi