During their Story of Frozen television special on Tuesday night, Disney announced that a Frozen short film is in development with a new song.

Josh Gad, who voiced the snowman Olaf in the film, told television audiences that the Frozen short film will be bringing back Anna, Elsa, Kristoff, and Olaf. The original voice actors are all returning as well.

“In Frozen Fever, it’s Anna’s birthday and Elsa and Kristoff are determined to give her the best celebration ever, but Elsa’s icy powers may put more than just the party at risk,” said Disney in a statement via email after the television event.

Frozen’s directors Jennifer Lee and Chris Buck are returning to helm the short. The film’s songwriters will also be back for the short’s new song. The length and details about where it’s going to debut are not known at this time.

The new Frozen short film is titled “Frozen Fever” and premieres in spring of 2015.

While you wait with anticipation for the new Frozen song, check out seven outtake tunes from the film that debuted on Frozen’s Deluxe Edition soundtrack.

The new Frozen short film follows in the footsteps of the original film’s huge box office (over $1 billion globally). Since its run in theaters late last year, Disney has announced plans for a Broadway musical, a Disney On Ice show, and children’s books based on Anna and Elsa’s life.