As to natural areas to explore in this regard, I also ran into a guy at the Bally’s I used to work out at who could do a similar crowd noise imitation. He would do it in the jacuzi when some other group of people would be talking loudly, struggling against the echos and water noises. There might be a couple or three of them conversing and then, out of nowhere, their voices would be overlaid with more voices until it was utterly impossible to separate out any meaning at all. Again, I was wondering where all the people were, when I finally noticed him off in the corner, and he started giggling at all the trouble he was creating…

Then there are the “beat-boxers” who use their voices as instruments. Some of them go WAY beyond that, however. In the showers – again at Ballys – I heard a commode flush – right next to me. But there were no commodes in the shower area. Then a V8 engine started, first with the starter motor, then the engine caught, then it was revved up and down. This did NOT sound at all like a human voice or any possible permutation of such. It sounded exactly like a real V8 engine, just like the commode flushing. I finally identified that it was the teenager in the stall next to me doing it all. He and his buddy were competing at beat-boxing while they showered.