Michael Fassbender enjoyed wearing mask for his new movie

Los Angeles  - Michael Fassbender found it 'liberating' to wear a mask in new movie Frank.

The actor, who has previously starred in Inglourious Basterds and X-Men First Class, plays the role of Frank - a character who insists on singing in a mask - in the new comedy flick.

Reflecting on acting wearing a mask, Fassbender told Collider: "I found it really liberating. It was like, as soon as I put the head on it gave me an element of mischief."

Fassbender was given three weeks to rehearse the musical elements of the film, and he says this time allowed him to "understand" the music.

He said: "I think the really hard task for these guys was to find music that was arty, but not pretensions, that had a real truth to it, that wasn't commercial, but wasn't awful, that had moments that were quite catchy, but again, not to be anything that's in the vein of pop music, so it was really a huge undertaking for them and I think they did a great job."

The new flick features Domhnall Gleeson and Maggie Gyllenhaal, and is directed by Lenny Abrahamson.

Watch the trailer here: