The singer recently revealed that he's recorded a song with Mumford & Sons singer Marcus Mumford for the new Coen brothers film JT's starring in, "Inside Llewyn Davis."
"Ok I can tell you this. There's a Coen brothers film coming out soon that I was lucky enough to work with Oscar Isaac and Carey Mulligan," Justin told England's Capital FM.
"And coincidentally I did work with Marcus Mumford on the soundtrack, so I became very good friends with them."
The unnamed track features Timberlake, Mumford, famed producer T-Bone Burnett and progressive bluegrass band the Punch Brothers.
Timberlake co-stars alongside Mumford's wife, Mulligan, in the film about the 1960s folk scene. "Marcus and myself we all kind of worked on the music together and I don't know any other world where we would get the opportunity to collaborate like that but it was so much fun," said Timberlake. "Not only will that be a great movie, but the music to it will be fantastic."
In the same interview, JT revealed that there's a very good reason why a number of songs on his upcoming third solo album, The 20/20 Experience, are twice as long, or longer, than the average three-minute pop tune.
"When we were making the record I said, 'If Pink Floyd and Led Zeppelin can do 10-minute songs and Queen can do 10-minute songs then why can't we?' We'll figure out the radio edits later,'" said Timberlake, who recently released the eight-plus minute single "Mirrors."