Testify

Testify is a song by Halsey that will be a track on her upcoming 3rd studio album, after being released as a single on January 1st, 2018. It is featured on the soundtrack of Mirror Mirror, the film adaptation of a novel by English actress Cara Delevingne, starring Rowan Blanchard.

Theme
"I wrote Testify when my friend committed suicide a few years ago." Halsey revealed in a heartfelt interview. "It's about how we all should've seen it coming. The signs were there and we should've taken it seriously. That's how I knew it would be perfect for the movie."

Trivia

 * Cara Delevingne not only wrote the original book and script, she helped out with the lyrics.
 * Testify plays in the trailer for the film as well.
 * The film's catch phrase is, "Keep an eye out for the snakes". This is a reference to No Frauds by Nicki Minaj, who is a fellow millennial artist.