Mike Rugnetta would like to talk with you about auditory illusions (not tricks), specifically the Shepard tone and binaural beats. Use your headphones for this one. (ALSO: art school college story time!)
The submarine film soundtrack work Mike mentions is here: https://mikerugnetta.bandcamp.com/track/guitar-shephard-tone
Sources: - Demonstration 27 – Circularity in Pitch Judgment http://asa.aip.org/demo27.html