When we heard that Justin Timberlake was finally making a comeback, we jumped for joy… But his comeback isn't what you might have expected. 

The Cry Me A River hitmaker will be bouncing back onto our cinema screens in an animated musical called Trolls. 

But JT won't just be voicing one of the main characters; he will also write and perform original songs for the highly anticipated movie, E! News has confirmed. 

"I have always envisioned bringing the two worlds of film and music together for one epic event [and] couldn't be more excited that they will collide in DreamWorks' Trolls," Justin said in a press release.

"This film is very special, the music is going to be very special and I can't wait for everyone to experience it all."

The film tells a story of two trolls and their quest to go far beyond the world they've always known. It will be the first film since he welcomed his son, Silas, into the world with Jessica Biel last April.

The movie isn't out until the end of this year, so you never know, baby Silas may be on the red carpet with the dad – which would make it the cutest red carpet of all time.