I found something neat. It's kind of a brain trick/function. Basically you wear headphones and listen to the audio file, as if you were in a barber shop getting a haircut. You MUST wear headphones for this to be effective at all.

I actually found it really surreal, if I didn't know better, I could have sworn someone was behind at some points. Just turn off all other noise sources, put on headphones and close your eyes.

It is on YouTube here for your convenience:


Original Source:
http://ccgi.bluerabbit.plus.com/virtualbarbershop/