Good news for every parent or caretaker tired of hearing little voices sing "Let It Go"! From what we can glean from this first look at "Frozen Fever," there will soon be a new song for young fans to obsess over. The catch is that you have to go see Disney's "Cinderella" in theaters to see the entire animated short, which will run before each showing of the fairy tale retelling.



"Frozen Fever" chronicles the mishaps of Kristoff, Olaf, and Elsa as they try to organize a birthday party for Anna. The short reunites the entire team behind "Frozen," from Kristen Bell and Idina Menzel to directors Jennifer Lee and Chris Buck.



Take a peek.