Several years ago, DJO made a fascinating discovery about verbal language & sound.
http://davidoates.com/ http://davidoates.com/david-oates-returns-to-coast-to-coast-am
http://www.reversespeech.com/home.htm, http://www.youtube.com/watch?v=BAYP7nKFrk0
Art_Bell looked into the Reverse_speech phenomenon & interviewed JDO.
http://www.youtube.com/watch?v=euhqpYFO3FY
http://www.thehiddenlanguage.com/pages/founderRS.htm,
http://www.irva.org/conferences/speakers/oates.html
http://desertshapes.blogspot.ca/2013/09/david-john-oates-reverse-speech.html