The Toronto Film Festival will open this year with a documentary about U2.

This marks the first time since the festival's inception that it has been opened with a documentary.

From the Sky Down is directed by Oscar winner David Guggenheim, and focuses on the making of the band's seminal 1991 album Achtung Baby.

It incorporates previously unseen footage of the band in Berlin and Dublin and new interviews.

Guggenheim said of the film in a press release: “U2 has defied the gravitational pull towards destruction, this band has survived and thrived. The movie From the Sky Down asks the question why.”

The festival, which runs from September 8 to 18, will also feature the North American premieres of films from George Clooney and Madonna.