Kylie, Stevie Nicks and Stray Kids close BST festival, with help from Harry Styles

Many of the songs they played hadn’t been released the last time Stray Kids came to the UK, so fans took the opportunity to scream out the lyrics to tracks like Maniac, Lalala and God’s Menu at the top of their lungs.

And the band responded in kind, racing back and forth across the stage and pulling off perfectly synchronised choreography, while spraying the crowd with bottles of water and making heart signs at swooning teenagers.

They teased out the encore – adding and reprising songs on a whim as the curfew loomed into view – until Australian rapper/singer Felix appeared to lose his voice.

“We’ll see you again soon,” he said, as his raspy baritone suddenly turned to a squeak. His startled expression to the onstage camera was hilarious.

Before the show, the band acknowledged how hard they worked on stage – and the dangers of losing their voices.

“We make sure to [warm up] our vocals because we get so excited,” Han told the BBC. “We give it more than 100% so [we make sure] our vocals don’t get shocked at all the noise that we’re going to make.”

And they acknowledged how far they had come since their last trip to the UK.

“Back then, there was some uncertainty,” said Han. “We didn’t know whether we had fans in the UK. But now we’re hoping to enjoy the atmosphere – the eight of us just making sure we have fun and rip the stage.”