The movie just kept growing and growing. We wanted to keep building out the story. And we thought it would be fun to build a film about big music videos. They're probably more compelling than movies in general. But they can't all be successful. There are different stories that work well on film. It was important for us to try different ways of telling it.

How much research did you do into songwriting? Did you watch old songs? Did you learn new songwriting techniques?

