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image captionPaul Roberts and Harry Styles have known each other since the days of One Direction

When the Harry Styles video for Treat People With Kindness was released it became an immediate hit. Its choreographer Paul Roberts had created dances for One Direction - though with 1D there was no Phoebe Waller-Bridge to consider. So how did Roberts combine the two stars' talents to create the energy-lift which people have been craving in the Covid gloom?