Ever wondered why OutKast's "Hey Ya!" can put a manic grin on your face? Or why Adele's "Someone Like You" makes you sob like a baby?
In the latest episode of It's Okay to be Smart, Joe Hanson takes to the streets of the live music capital of the world to test a recent hypothesis, which holds that our emotional relationship with music may be neurologically related to the perception of body language. Writes Hanson: