Rock & Rule (known as Ring of Power outside North America) is a 1983 Canadian adult animated[2] musical science fantasy film featuring the voices of Don Francks, Greg Salata, and Susan Roman.

[3] It was produced by Michael Hirsh and Patrick Loubert and directed by Clive A. Smith from a screenplay by John Halfpenny and Peter Sauder.

[5] Mok Swagger, a legendary rock musician, is on the search for a very special voice whose frequencies can unleash a powerful demon from another dimension, his dwindling popularity driving him to destroy the world in vengeance and immortalize himself in the process.

After travelling around the world looking for the right voice, he returns to his hometown of Ohmtown, a remote, storm-ravaged village famous for its unique power plant.

Mok incapacitates Omar and Stretch with hypnotic "Edison Balls" as he takes Angel on a stroll through his garden and tries to convince her to join him.

Unwilling to admit defeat, Mok kidnaps her and takes his blimp to Nuke York, where his summoning, disguised as a concert, will be performed.

Because the invocation requires a titanic amount of electricity, Mok relocates the summoning to Ohmtown, whose power plant has enough energy.

Meanwhile, one of the Schlepper brothers, Zip, expresses childlike doubts about whether their actions are good or evil, and Mok rudely dismisses both his concerns and his feelings.

They go without him in a stolen police car, but crash at the concert too late, as Mok forces Angel to sing and open a portal to the demon's dimension.

A massive demonic entity emerges from the portal and begins wreaking havoc on all those present, wrecking part of the ceiling and devouring some of the bystanders in the audience.

[12] The crew felt that it would be easier to animate cartoony characters[13] but, as the film evolved, they gradually became more humanistic,[14] and Hollywood acquaintances encouraged them to skew the tone towards an older audience.

[15] The film was produced without a well defined script;[16][17] so the crew would develop and work on sequences, leaving holes for more layers of the story to be added later.

[25] The American distributor, MGM/UA Entertainment Company, disliked Greg Salata, who voiced Omar, and insisted that he would be re-dubbed by an actor with name recognition, along with several edits being made to the film.

Nelvana uploaded the film to its YouTube channel, Retro Rerun, on November 30, 2019 (which was presented in the American VHS and LaserDisc formats).

The film was mentioned in an episode of Night Flight, when Lou Reed was interviewed and incorrectly credited as the speaking voice of Mok.

[35] Critic Janet Maslin of The New York Times commented that "The animation ... has an unfortunate way of endowing the male characters with doggy-looking muzzles.

[5] Songs from Iggy Pop, Lou Reed, Cheap Trick, Debbie Harry, and Earth, Wind & Fire feature on the soundtrack.

[41] Presumably, due to the film's limited release and the fact that the artists were under contract to different record labels, a proper album was never issued, although a promotional cassette was given to the press featuring nine songs from the movie.

Additionally, Debbie Harry revised the lyrics to "Angel's Song" and retitled it "Maybe for Sure", which was featured on her 1989 album Def, Dumb & Blonde.

[4] Keith Breese of Contact Music noted that the soundtrack "certainly feels contemporary", with "Debbie Harry's addictive 'Angel Song' as the highlight".