Just when the song “Let It Go” finally has become unstuck in your head for the first time in months, the people behind Frozen are at it again. To the surprise of no one, one of the most successful Disney movies of all time is getting a sequel. Though Disney hasn’t announced when they are targeting for a release date, Frozen fans don’t have to wait to revisit their favorite Frozen friends. The studio has released a new, infuriatingly infectious song, “Making Today a Perfect Day” that accompanies the release of the 7-minute short Frozen Fever, that is airing before screenings of Cinderella, which releases this weekend …