‘Song Sung Blue’, a story of hope amidst a tragic love story.

Hugh Jackman and Kate Hudson star as Mike and Claire Sardina, aka Lightning and Thunder, a duo Neil Diamond tribute act that got major attention in Milwaukee.

The film is based off a documentary about the couple with the same name, that was released in 2008.

Before working together on this project, Jackman and Hudson didn't really know one another – meeting a few times but not in any great detail.

But for a movie like this, where the relationship between the two leads is the basis of the film, that can be a risk.

“On day one, Kate said to me, you know, if we don’t work, this movie doesn’t work,” Jackman told Mike Hosking.

“And she was right, but I had a lot of confidence.”

“I had a strong sense that it was gonna be great, but I didn’t know it was gonna be this great or this easy.”

For Hudson, things clicked into place when the two kissed for the first time.

“It’s like we’ve been kissing each other for years,” she said.

One review described the role as Jackman’s most ambitious yet, a sentiment the actor agreed with.

“I think it combines a lot of different things that I do, but in many ways it was asking things of me that I hadn’t done before.”

Hudson agreed, comparing it to asking a baseball player if they want to play in the major leagues.

“It’s scary, but I want that.”

“I love hard work, and I like work that gives me a little of the, you know, the butterflies.”

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Hugh Jackman and Kate Hudson: Actors on their performances in 'Song Sung Blue'

The Mike Hosking Breakfast