If you’re looking for some light relief at the cinema, what about watching a concert on the big screen? 

Well, lots of people who missed out on tickets to the Taylor Swift tour are doing just that, with her new movie becoming the biggest concert film of all time.

So how did one pop star become so influential she can change the GDP of a city she visits? 

Today director of the Music Industry Program at the University of Miami, Serona Elton on what’s fuelling Swift-mania.

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Serona Elton, Director of the Music Industry Program at the University of Miami