After some confusion, it appears that a Mastodon song from 2004's 'Leviathan' will indeed be featured in the new Disney-Pixar film 'Monster's University,' which is a prequel to animated favorite 'Monsters, Inc.'

The pre-existing song 'Island' is utilized in a scene in the film, but will not appear on the official soundtrack. The filmmakers explained how and why 'Island' and Mastodon were chosen to factor into the film, saying, "There is a great moment in 'Monsters University' when we thought it would be funny if the tunes were some of the most intense heavy metal imaginable. Mastodon was the obvious choice. They show off an unexpected monstrous side for one of our great new characters."

Sounds like the perfect fit and like Mastodon provided the "mood" music. The film lands in theaters this Friday (June 21) and now you have even more of a reason to go see it. So make plans to grab some popcorn, a large Diet Coke and settle into stadium-style seating to watch the animated feature and to hear a little Mastodon.

Mastodon have history with film. The band scored the 2010 comic book film 'Jonah Hex' starring Josh Brolin and Megan Fox.