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Listen to Scarlett Johansson Rock Out to 'Set It All Free' From the 'Sing' Soundtrack (Audio)

Illumination's animated feature also features the voices of Matthew McConaughey and Reese Witherspoon

Scarlett Johansson's new song from the "Sing" soundtrack is here, as the actress encourages you to "Set It All Free."

In the animated feature, which will hit theaters on Dec. 21, Johansson voices a porcupine named Ash. "Sing" tells the story of a koala named Buster Moon who holds a singing contest to save his theater.

Matthew McConaughey, Reese Witherspoon, Seth McFarlane, Nick Kroll and Taron Egerton also lend their voices to characters in the film.

"Set It All Free" is an energetic anthem about letting loose and not letting things get you down.

The actress will next star in "Ghost in the Shell" and "Rock That Body." She is also rumored to reprise her role as Black Widow in the upcoming "Avengers" film, "Infinity War."

Listen to Johansson's song below.