Of course, making a movie this big comes with a lot of behind-the-scenes secrets and interesting facts.

Below are some of the things that went into the making ofA Star Is Born.

Just beware, if you haven’t seen the movie yet, there may be some spoilers!

A Star Is Born

It shot like a diamond through my brain.

I loved the way she moved, the sound of her voice."

Cooper basically offered her the part that day, and then they had spaghetti and meatballs together.

Will Smith

At some point, Cooper took over the director role.

Years before that, according toPeople, Will Smith was interested in remaking the film.

Although Smith didn’t want to direct, he did want to play the role of Jackson.

Bradley Cooper Lady Gaga

Filming obviously never picked up for either idea, and Cooper ended up scooping up the project.

He toldVoguethat after he didAmerican SniperandThe Elephant Man, he thought, “I’m old enough now.”

He ended up writing three of the songs for the movie.

Bradley Cooper Lady Gaga

She really gave me the confidence."

Gaga had Cooper sing, which he described as “awkward” toWmagazine.

But Gaga could see he had talent, and that seemed to boost his confidence.

Lady Gaga

He would whisper “ninja” or “assassin” if he needed her to focus.

He wanted her to be, “Completely open.

Adjusting to not wearing makeup was difficult for Gaga.

Bradley Cooper Lady Gaga

As it turns out, many of those crowds were real.

Coachella was a little more difficult, since Gaga was headlining.

She shot her scenes between sets, and Bradley sang live with her as Jackson Maine.

Lukas Nelson

He toldW, “At first, I was terrified.

You forget everything when you’re onstage in front of 30,000 people.

I almost couldn’t breathe.

Bradley Cooper

Lukas Nelson, Willie Nelson’s son, helped them with a lot of the music.

Cooper noticed him when they were shooting at Coachella and Lukas was playing guitar for Neil Young.

Cooper toldPeople, “There was no nepotism I wanted this relationship with the dog.

Lady Gaga

I love dogs.”

He toldPeople, “That meant a lot for him to be in the film.”

He also joked that since being in the movie, Charlie “has an agent.

Eddie Vedder

I don’t talk to him much anymore.

He doesn’t return my calls.

He always walks away from me unless I have food.”

Bradley Cooper Lady Gaga

She said, “Bradley was so beautiful with me that day.

He was so loving.”

Cooper explained this as “an amalgamation, on a subconscious level.”

He said that he became good friends with Vedder, who acted as his source and inspiration behind Jackson.

The final scene of the movie was Ally singing a song on stage that Jackson wrote for her.

Apparently, though, this almost didn’t happen.

In the first ending, Jackson “actually swims out into the ocean, where he commits suicide.”

Then the ending changed again.

Emmerich said, “The script that we had when he started shooting, he rides his motorcycle.”

He describes it as more similar to the ending of the 1976 version.

Eventually, though, Cooper changed his mind.