> Thing is, our senses are all very good, everyone can hear when singers are out off tune Yeah. But how precisely people are able to do this varies a lot, and

> Thing is, our senses are all very good, everyone can hear when singers are out off tune Yeah. But how precisely people are able to do this varies a lot, and correlates strongly to musical training or (anecdotally) growing up in a "musical environment". This supports the emotional granularity idea from the article. [Now all pop music is auto-tuned by computer, but a lot of older music (Madonna, etc.) is grating if you have moderately good musical hearing.]