The documentary, directed by Albert Maysles, captures McCartney's experience in New York on 9/11 and in the months after, as he planned and performed the star-studded benefit 'The Concert for New York City' at Madison Square Garden.

"It was an honor to be able to help New York and America at that time in its history," McCartney said in a statement. "There was a feeling of shock and fear in the air that I thought we could help alleviate with music. And the fact that so many people stepped up to join us made for a very uplifting evening for us all."

McCartney had been scheduled for a departing flight on that day, but was grounded, and ultimately returned to the city to roam the streets, observe the devastation and talk to New Yorkers.

Maysles is no stranger to concert documentaries, having directed the classic Rolling Stones classic 'Gimme Shelter.'

"There was so much suffering as a result of 9/11 it's hard to imagine how one might bring relief to those who were impacted by the attacks, and honor those firefighters, police officers and rescue workers who lost their lives in their heroic attempt to help others," Maysles said in a statement. "But Paul had the answer: music and a film that would tell the full story."