Dierks Bentley is used to writing songs for his many albums, but the “Drunk on a Plane” singer has never written a song for a feature film . . . until now. Dierks’ “Days of Dark” is featured on the soundtrack of the new movie The Shack.

“I couldn’t be more humbled, honored, excited, proud that a song of mine that I was a co-writer on made it into the soundtrack for the movie The Shack,” Dierks says. “The song is called “Days of Dark.” It’s a song I wrote with some of the guys back in Nashville and just thinking about The Shack and the plot and the story—the idea of the song is that these days of dark need to be overcome. It has kind of a dark title but at the end it’s kind of an emotionally uplifting song. I feel like The Shack is the same way. It’s a very powerful book.”

While Dierks hasn’t seen the movie yet, he’s excited to have his first movie cut.

“I think the song fits perfectly for the movie,” he adds. “It’s one of the first movies I ever had a song in. Like I said, I couldn’t be more excited about that. I’m looking forward to seeing it.”

The faith-based film, which stars Sam Worthington, Octavia Spencer, Radha Mitchell and Tim McGraw, also features a new song, “Keep Your Eyes On Me,” which was written and performed by Tim McGraw and Faith Hill. Other country artists appearing on the soundtrack include Lady Antebellum, Dan+Shay and Brett Eldredge.

Watch Dierks talk about “Days of Dark” from the movie, The Shack.