Paying homage to one of their hugely-successful predecessors, One Direction performed the Backstreet Boys' "I Want it That Way" during a concert in Sweden earlier this week.
The cover came after a fan tweeted a request for the song and the boys immediately launched into the hit, with the crowd singing along.
Louis, Zayn, Harry, Liam, and Niall brought out their A-game for the Stockholm crowd, sounding like they'd been performing the tune for years.
As the footage made its way around, BSB themselves tweeted their appreciation, posting, "Heard @OneDirection did an impromtu performance of 'I Want It That Way' in Sweden last night. Well done bros!" Check out a clip of the guys rendition below.