Crowd response was strongest for the early-2010s run of hits, with The One That Got Away, Teenage Dream and Roar prompting mass singalongs.

There were quieter moments too, with Ms Perry stripping things back for an intimate and acoustic rendition of Thinking of You.

The night ended, inevitably, with her mega-hit Firework, delivered against a backdrop of lighting that spilt over the palace façades.

It was a pleasure to have pop royalty here in Oxfordshire, and it’s safe to say that Ms Perry’s roar could be heard across the Cotswolds on Wednesday night.