Everybody knows that bass is a sound that's meant to be felt as well as heard. But how about this:
"About a year and a half after her stroke, a 36-year-old professor started to feel sounds. A radio announcer’s voice made her tingle. Background noise in a plane felt physically uncomfortable. [...]
Sophisticated imaging of the woman’s brain revealed that new links had grown between its auditory part, which processes sound, and the somatosensory region, which handles touch." Read more (Wired)
Synesthesia is a funny thing. More over here.