Members of Incubus, Aerosmith, No Doubt Among 100 Celebrity Narrators in New Documentary, “Unity”

Image Courtesy of Island RecordsIncubus frontman Brandon Boyd, Aerosmith guitarist Joe Perry and No Doubt bassist Tony Kanal are among the 100 celebrity narrators lending their voices to a new documentary out this summer. The film, called Unity, explores what it means to be human and how we impact the world.

Def Leppard drummer Rick Allen will also help narrate the film, as will Rise Against frontman Tim McIlrath and Moby. It's not clear yet what parts they will be narrating, but the film will be divided into chapters.

A host of other actors and entertainers round out the unprecedented cast, including House of CardsKevin Spacey, daytime talk show host Ellen DeGeneres, Interstellar actress Jessica Chastain and Breaking Bad’s Aaron Paul.

Written and directed by Shaun Monson, the ambitious documentary took seven years to make. It hits select theaters beginning August 12.

Copyright © 2015, ABC Radio. All rights reserved.