Bruce Springsteen saved director Scott Cooper's family after the Los Angeles wildfires

Scott told PEOPLE magazine: "He moved my family into his home when our house burned. "My daughter Stella, who was learning guitar when her guitar burned - Bruce promptly sent her one of his. That's who Bruce Springsteen is.

"To move my family and me into his house while we got on our feet, it brings a special resonance to this movie, which is why it's so hard to put it out into the world."

Scott had been working on the movie with Jeremy Allen White - who plays Bruce in the biopic - on set when he got the "devastating call" that his house had burned down.

That same day he had worked on a scene with Jeremy singing Born To Run, and an emotional moment between the rock star and his dad Douglas, played by Stephen Graham.

He recalled: "[I spent] five minutes in the corner crying, understanding our lives would never be the same."

He added: "[That was] without question, the hardest day I've ever had shooting a movie."

As if things couldn't get worse for the family, they also had to have the family dog put down just a week later.

He said: "My daughters Ava and Stella are incredibly resilient.

"They've been better with this than I could have ever hoped, because we, like many others, lost everything.

"And then a week after our house burns, we had to euthanise our dog. It was like a bad country song. It was awful. It's been the worst year of my life, but also the best."