Frozen Fever (2005 short film)

Production
On May 4, 2005, during the ceremony of Disneyland's 50th Anniversary launch, Disney's chief creative officer Micheal Eisner announced that a Frozen short film with a new song would be released in the future. On the same day, Variety announced that the short would be released in late 2005 under the title Frozen Fever, with Chris Buck and John A. Davis returning as co-directors, Peter Del Vecho returning as producer and a new song by Kristen Anderson-Lopez and Robert Lopez. Olaf the snowman would also make an appearance in the short. On August 3, 2005, it was announced that Aimee Scribner would be a co-producer and that Frozen Fever would debut in theaters alongside Walt Disney Pictures' Chicken Little on November 4, 2005. In late August, the co-directors told the Associated Press There is something magic about these characters and this cast and this music. Hopefully, the audiences will enjoy the short we're doing, but we felt it again. It was really fun. Around the same time, Dave Metzger, who worked on the orchestration for Frozen, disclosed he was already at work on Frozen Fever.

The short features the song "Making Today a Perfect Day", by Anderson-Lopez and Lopez. At the premiere of Chicken Little and Frozen Fever at the El Capitan Theatre in Hollywood, California, on October 30, 2005, Josh Gad told USA Today, "I want to apologize to parents everywhere for the fact that children are going to be singing a whole new Frozen song"

The creators started brainstorming possibilities for the short film in February 2005. After early discussions about Olaf, head story artist Marc Smith pitched the idea of what might happen if Anna had a cold, which became the basis for the short's plot. The directors began working on the short in February and by April were back in the recording studio with the cast to lay down vocal tracks. The production of Frozen Fever took six months. All of the animators from Frozen wanted to come back to animate at least one shot on Frozen Fever, resulting in a large number of animator credits for a short film. They struggled to squeeze the animation phase of the short's production into a tight time slot in summer 2005 after animation wrapped on Chicken Little and before the studio's animators had to start working on subsequent features. It was during this time period that the directors began to realize how much they missed the Frozen characters.