After his recent collaboration with Kanye West and Rihanna, Paul McCartney has confirmed that he has been secretly working with Lady Gaga on a song for an animated film version of his 2005 book, High in The Clouds.

Deadline reports that not only has McCartney written up to eight songs for the film, he will also voice one of the characters.

High in The Clouds will be directed by Cloudy with a Chance of Meatballs 2 co-director Cody Cameron and follows Wirral the Squirrel as he searches for an animal utopia.