Although Eminem's forthcoming album 'Revival' features a host of pop collaborators including Beyonce and Pink, Ed Sheeran's name was a surprising inclusion on the tracklist.

Nevetherless, their collaboration, a song called 'River', made the cut and now Sheeran has revealed more info about it.

In an interview with Billboard, he explained that he actually wrote the song while he was staying at Russell Crowe's house in Australia. Luckily, Crowe - who also dabbles in music himself, most recently with Indoor Garden Party - had a recording studio, so when an email came through from Eminem's manager, he was ready to get to work.

“I sound like such a c**t name-dropping, but I was traveling Australia and Russell Crowe has a house, this big farm," he explained, adding that Crowe had given him an open invitation to stay. “I get an email from Paul Rosenberg, Eminem’s manager, and he said, ‘We’re gonna start putting the album together, send any ideas.

"So I used the studio at Russell’s house… played the drums on it, and then played the guitar, and then recorded the thing and wrote the chorus and did the piano on it, and then sent it off and then didn’t hear anything back. This was like March 2016.”

He added that it wasn't until May of this year that he learned that Eminem had recorded his verses.

Watch him tell the story in full below: