Instead of describing the attacks, the movie follows the lives of 11 New Yorkers through six consecutive September months following the 9/11 attack, as each one comes to grip with their lives in different ways.
"This is not a movie about September 11. This is a tale about what happens after. September 11 was a catalyst for personal change, both good and bad. This movie is about healing, and about moving forward," the film's director Elizabeth Lucas was quoted as saying by Xinhua.
Lucas said she sees a musical as a way to delve deeper into the characters. The film uses pop and rock tunes to project different human feelings surrounding life in post-9/11 New York - "from fury and fear to humour and hope".
"I really enjoyed it. I thought it was incredibly emotional and extremely poignant. The music is amazing," said Teresa, a New York resident, after the premiere.
The film was shot in just 19 days in New York City.
