Many churches and cathedrals have organ pipes that are so long they emit infrasound
which at a frequency lower than 20 Hertz is largely inaudible to the human ear.
But in a controlled experiment in which infrasound was pumped into a concert hall,
UK scientists found they could instil strange feelings in the audience at will.

These included an extreme sense of sorrow, coldness, anxiety and even shivers down the spine.