This is from the space time continuum album featuring terence McKenna, which originally was part of a visual show produced by rose-x. This is the glossolalia section, I think it's great, though you can hear stoned ravers in the crowd who can't control themselves from bursting out in laughter, laughing so loud it is audible behind McKenna.
This is one of my favorites, and I'm sure we have all had something similar occur.
Misc. Interesting human audio phenomena
In this video we see terence McKenna with Jill pruce demonstrating tuvon vocal overtones, you can skip directly to 1:10 in the video excerpt to view the phenomena.
https://www.youtube.com/watch?v=1rmo3fKeveoMongolian throat singing
https://www.youtube.com/watch?v=qx8hrhBZJ98Tuvan vocal overtones.
-eg