The barber turns on his trimmers. Click. Bzzzzzzzzz. He brings them closer and closer to my ears. He moves from one side of my head to the other. The gentle buzzing sound slowly pans from my left ear.

Does listening to a whisper send a tingle through your scalp? Do you find watching the snip of scissors around your ears at the hair salon soothing? How about the sound of nails clicking softy, the ...