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

- Scelsi: Cello Music (review)
http://www.medieval.org/music/modern/scelsi/cello.html