He said: "We have always suspected a link between music taste and personality. This is the first time that we've been able to look at it in real detail. No-one has ever done this on this scale before."
Prof North said the research could have many uses in marketing, adding: "If you know a person's music preference you can tell what kind of person they are, who to sell to.
"There are obvious implications for the music industry who are are worried about declining CD sales.
"One of the most surprising things is the similarities between fans of classical music and heavy metal. They're both creative and at ease but not outgoing.
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