Before I watched I Am Woman, a new movie out September 11, I didn't know much about Grammy-winning singer-songwriter Helen Reddy.

I've now watched I Am Woman twice and am stunned that someone didn't make a movie about Reddy sooner.

The movie begins in 1966, when single mother Helen Reddy (Cobham-Hervey) leaves her home in Australia, hoping to find success in the music industry in New York.

“I worked on this for over seven years,” Moon tells by phone from Australia, “and at the heart of the film is a love story—the relationship between Helen and Jeff (American Horror Story's Evan Peters) and the incredible things they did as a team.” Moon says it's that reason that she's had as many men reach out after seeing the film as women.

Says Moon, “Using real footage from that time not only brings out emotions in people, but it lands Helen's story in the greater context of what's happening in the world.

We as women stand on the shoulders of the decisions that have been made before us, so I hope young women are inspired to learn more about what happened then and why it's important to make thoughtful changes now.”.

Moon says she and the producing team searched five countries for the right actor, and interestingly, Cobham-Hervey (best known for playing Nanny Sally in Hotel Mumbai) wasn't even on the initial casting list.

Once Moon saw a photo of Cobham-Hervey, she immediately noticed the resemblance to Reddy, but it wasn't until they met that Moon knew she had found the perfect person for the role. .

But similarities aside, stepping into the role was terrifying for Cobham-Hervey, who had months of voice classes, breathing lessons, singing lessons, and movement classes to play Reddy.

As for Cobham-Hervey's singing voice in the film, the actor says she sang live on the days they filmed, but singer Chelsea Collins then sang over Cobham-Hervey's performances to get Helen's voice exactly right.

“I wish I could say it was [all] mine," Cobham-Hervey says, "but Chelsea is a gorgeous, amazing artist, so it was sort of an amalgamation of both our voices.".

“At the end of the film, we talk about the Equal Rights Amendment, and that is an amendment that has still not been passed,” Cobham-Hervey says

“It has to be an entertaining movie if the message is going to have any impact,” she says