Editor's note: MPR News is replaying this episode of A Beautiful World from 2015.
"My idea of a beautiful world, is everything's got nice round edges," said James Wannerton. "Because I absolutely love the taste of round edges."
James Wannerton has a neurological condition called synesthesia, which makes him taste sound.
It has many subvarieties. His is called lexical-gustatory synesthesia, which means his ear and his tongue are biologically wired together.
When Wannerton hears a sound, his taste buds simultaneously fire off, and produce (or inflict) an amazing array of flavors in his mouth.
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"It's like an eyedropper of taste, and each of these drops vary in intensity," he explained. "Some are strong, and some are very weak. It's like having a fluorescent light turned on and then off again. That's what happens with these tastes, they sort of flash/fade, flash/fade."
Wannerton has been tasting his world since he was a little boy. On his way to school, while riding the London Underground Tube with his mother, he'd get strange, involuntary tastes in his mouth every time they passed through a station.
At the time, being a child, he just assumed it was normal. He thought everybody tasted names. As an adult, he learned it was "far from normal."
Here's his story.