Lewis Capaldi’s record label sent him to an etiquette expert so he would learn how to walk and talk properly.
The 23-year-old pop star attended a three-hour session with celebrity party organiser Liz Brewer at her home in Chelsea, West London, back in October 2018.
She told the Daily Record newspaper: "He wasn’t a big star then and didn’t have the reputation he has now. But they must have thought he had potential to spend that money.
"He was a good pupil and listened carefully."
Liz refused to confirm exactly how much she was paid for the session, but she admitted it was "well over four figures".
She continued: "None of the classes included any swearing and he never swore when he was with me. He was a perfect pupil.
"It’s a great shame he feels he has to swear now as he’s a nice guy with huge talent. I think it’s an age thing and I’m sure he will grow out of it."
A spokesperson for Lewis confirmed the etiquette session was part of a jokey video series filmed around the release of his single ‘Grace’.
The spokesperson added: "Lewis’ team loves him exactly how he is."
Meanwhile, Lewis recently sent a congratulatory text to his ex-girlfriend Paige Turley after she won ‘Love Island’.
The singer – who won the Best New Artist and Song of the Year accolades at the BRIT Awards in February – and Paige dated each other for around one year, and despite their split, they remain on friendly terms.
Paige – who won the popular dating show – said: "I actually text him to say congratulations on his BRITs. Yeah, he text me back to congratulate me on ‘Love Island’ so it’s good but I haven’t really had a chance to catch up with anybody."
Asked about their relationship these days, Paige added: "We’re still good friends."