Organ music 'instils religious feelings' By Jonathan Amos: People who experience a sense of spirituality in church may be reacting to the extreme bass sound produced by some organ pipes.

Then there's this:

Researchers have found that frequences as low as one hertz (one cycle per second) have a definite effect on the inner ear, somehow short-circuiting its equilibrium and causing dizziness.

Infrasonically-induced dizziness may not be the stuff of paranoid fantasies, but it may yet turn out to be a serious problem.

Dangerous places, churches.