KJ Apa does all his own singing in the new romantic biopic “I Still Believe”.

On Thursday, the first trailer for the film was released, in which the “Riverdale” star plays real-life Christian music star Jeremy Camp.

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In 2001, Camp lost his wife Melissa, played by Britt Robertson, to ovarian cancer, sending him on a spiritual journey that led to the creation of four acclaimed albums.

“Their love is seriously put to the test in this movie,” Apa told People. “I hope, after seeing the love between Jeremy and Melissa, the audience can sit there and think, Wow, I hope that I can one day be in love like that. I mean, that’s what ‘I Still Believe’ is about; it’s about journeying through your biggest fears and disappointments and coming out still believing. I believe that anyone, everyone can relate to this film because it’s a story about love, loss, and hope.”

Photo: Lionsgate
Photo: Lionsgate

The 22-year-old also admitted to being “terrified” of singing in the film.

“I’m super uncomfortable when I sing,” he said. “I went into the studio in Nashville — I did that first before we shot anything — and I think that really gave me perspective on the film. Having that sound and knowing what all that music is going to sound like before you go in is super-important. It’s either going to boost your confidence and boost your morale or it’s going to be like, ‘Oh, man, that didn’t go so well, so what are we going to work with?’ Luckily, it couldn’t have gone better. I think people are going to love it.”

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The film also stars Canadian country legend Shania Twain and actor Gary Sinise.

“I Still Believe” hits theatres March 20, 2020.