The song is from 1D’s 2014 album “Four.”

Harry Styleshas not forgottenOne Direction.

He left the group, which also featured Liam Payne and Louis Tomlinson, in 2015.

The original One Direction — Zayn Malik, Louis Tomlinson, Harry Styles, Liam Payne, and Niall Horan — perform in 2011

The original One Direction — Louis Tomlinson, Liam Payne, Harry Styles, Niall Horan, and Zayn Malik — perform in 2011.Dave Hogan/Getty

Though they were together for only a short time, One Direction was a phenomenon.

But Malik left in 2015, and the rest of the members went on hiatus the following year.

Their last album with all five original members was the one with “Stockholm Syndrome.”

“I can be very naive at times, and that was me being very, very naive.

So, next time, that will be part of the deal.

I have to own the name.

They can still make most of the money, but I need to own the name.”

Dave Hogan/Getty

The former One Direction members have stayed busy, though, with each putting out solo albums.

As he launched a solo string of concerts in 2017, Stylescovered “Stockholm Syndrome” himself.

“I’ve never been one to hide away from it.

They’re great songs,” Horan said.

“Theres so many on there that feel like my kind of stuff as well.

And it’s good to make new versions as well.”