Found the below article in Rolling Stone about this long-shelved concert footage/animation coming to select theaters January 21, 2019
Paul and Linda started this project in 1972 combining the 72 tour with animation about a mouse…Bruce McMouse to be correct.
More details about the showings
Never-before-seen, The Bruce McMouse Show is a concert film with a difference. Paul McCartney opens with the story of how the band came to meet the inimitable impresario Bruce McMouse. Featuring the original Wings line up, live concert footage from Wings’ 1972 European tour is interspersed with animated scenes, introducing a family of mice living under the stage. After opening the film with ‘Big Barn Bed’ – taken from Wings’ LP Red Rose Speedway – the camera takes us down through the floorboards into this charming animated world. We see Bruce McMouse regale his children with stories from his past, when son Soily rushes into the room in a whirlwind of excitement announcing that “The Wings” are playing above them.
As the concert plays on, Bruce declares to his wife Yvonne that Paul and the band need his help. Bruce then proceeds to venture on stage to offers his services as producer. As the concert progresses, the animated scenes culminate with dozens of animated mice flocking to the venue to see Wings play. The film was directed by Barry Chattington and produced by Roger Cherrill with the live elements taken from four shows in Holland and Germany in 1972.
Paul viewed the initial concert edit and realized there was great potential in the material captured. Prior to the European tour, Paul had the idea of a family of mice and sketched the characters. Picking up the idea, Eric Wylam took Paul’s sketches and created the final McMouse family. This storyline was incorporated and used as a linking theme within the concert footage. The voice-overs for the animated mice took place at the end of 1973, recorded by Paul and Linda McCartney, Deryck Guyler, Pat Coombs and Derek Nimmo.
Production stretched from 1972 to 1977 when the film was complete, however, with changes in the band’s line-up and music scene, the project was shelved. ‘The Bruce McMouse Show’ has been fully restored in 2018 at Final Frame Post alongside a brand-new audio mix (stereo and 5.1) created at AIR Studios and mastered at Abbey Road.