EXCLUSIVE: Jessie J Takes ET Behind the Scenes of Her 'Pitch Perfect 2' Music Video

Her new song 'Flashlight' will play a key role in the highly anticipated sequel.

The countdown is on, Pitches!

With the Pitch Perfect 2 premiere just around the corner, ET is getting an exclusive sneak peek at some of the new music featured in the acca-comedy. Namely, "Bang Bang" singer Jessie J is taking us behind the scenes of her new music video, "Flashlight," which will play a key part in the highly-anticipated sequel.

"Everyone loves to sing, and everyone loves to sing songs that they know," Jessie says in the behind the scenes video, above. "What's so great about this movie, there's a twist. The big song, the big finale, the big final song is a song that no one knows, which is 'Flashlight.'"

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In her new video, the 27-year-old sings and dances her way through Barden University (aka the UCLA campus) and treats students to a moonlit (complete with flashlights, of course,) performance of her uplifting single, which was co-written by Sam Smith and Sia.

"I guess the ultimate feel behind the video and the concept is about giving someone something happy, you're my flashlight," she says. "Having someone that gives you light in moments of darkness."

Watch the full video, directed by Hannah Lux Davis, below.

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The Pitch Perfect 2 soundtrack is available for pre-order now, featuring a "campfire version" of "Cups," a '90s medley and cast member Ester Dean's song "Crazy Youngsters."

And, as if you needed another reminder, Pitch Perfect 2 hits theaters on May 15.