EXCLUSIVE: See Celine Dion's Poignant New Music Video

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Celine Dion's latest project will absolutely melt your heart.

The iconic singer has recorded a sweet song for the children's film Snowtime!, which debuted recently at the Sundance Film Festival in Park City, Utah. Only ET has the full-length music video for "Hymn," featuring clips from the film and footage of Dion delivering vocals as only she can in the recording studio. Watch below.

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"I did discover the movie because of my son, Rene Charles," Dion recalls in a behind-the-scenes interview. "It was pretty touching. What a beautiful story!"

According to an official synopsis from the film festival, Snowtime! follows a group of kids in a small village as they engage in a "massive snowball fight. But what starts out as pure youthful fun and enthusiasm deteriorates into a more serious conflict as the children learn the role that love and friendship play in their lives." Based on the 1984 film La Guerre Des Tuques (The Dog Who Stopped the War), a French version of the animated project was released last year in Canada.

Dion says that her 5-year-old twin sons, Eddy and Nelson, "loved" the film.

"To discover the movie again 10 years later, I was like, 'It's still as good,'" Dion says. "It doesn't feel old, it doesn't feel like it's an old storyboard, it doesn't feel like it's, 'Well, that was in those days.' No, the heritage, the Quebec heritage, it's part of how I grew up. I still feel that origin and those values, and I want to pass them along to my children."

Dion calls it an "honor" to contribute to the soundtrack, which will be released on Feb. 19 -- the same day that Snowtime! opens in U.S. theaters. 

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The release comes at a tragic time for the 47-year-old singer. Her husband of more than 20 years, Rene Angelil, died of throat cancer on Jan. 14. Two days later, Dion's brother, Daniel, also died.

"Infinity, where does it start?" Dion sings on "Hymn," the lyrics for which feel even more poignant after her recent losses. "Where do we go when we depart?"

Late last month, Dion and her family penned a letter of "gratitude" to her fans for their support during this difficult time.

"We thank from the bottom of our heart all the people who have expressed their love for Rene during these trying times," the message reads. "Your testimony and your support helped us, more than you can imagine to take this step and say our farewells."

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