Writing on TikTok, Francis said: "I was hoping to see a class 91 at Kings Cross. Amazingly, I ended up seeing @La Rosalia too!"
“Hang on a minute – isn’t that Rosalía?” he said in the video. As he approached the Spanish singer-songwriter who was standing farther down the platform, he said “I’m gonna go say hello to her. I love her music.”
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Rosalía was then approached by Bourgeois, who asked as to what had brought her to London's Kings Cross station. “What are you doing here?” she replied. To which he responded: “I’m checking out the Class 91s.”
The two then waved goodbye to an LNER train as it left the station Francis screamed "thank you" to the train passengers and crew.
This unexpected link-up has gotten a lot of surprise reactions from personalities and organisations online, including BBC Radio 1 who commented "yes yes yes to this collab".
Rosalía just released her third album, 'Motomami,' on Friday (March 18). This was a long-awaited move from the singer - and it came after following the release of singles ‘Hentai’, ‘La Fama’, ‘Saoko’ and ‘Chicken Teriyaki’.
Read this next: Rosalía reveals she's been in the studio with Frank Ocean
Francis Bourgeois met up with Sam Fender and his band at the BandLab NME Awards 2022 at Brixton Academy earlier this month. Joe Jonas and Thierry Henry are among the TikToker's other prominent followers.
Aneesa Ahmed is Mixmag's Digital Intern, follow her on Twitter