The song Elsa sings while building her ice palace is “Let It Go.”
In Frozen, Elsa performs “Let It Go” after fleeing Arendelle and reaching the North Mountain. Away from the kingdom and the people who fear her powers, she decides to stop hiding her ability to create ice and snow. During the number, she changes her appearance, creates a living snowman, and constructs an elaborate ice palace.
The song was written by married songwriting team Kristen Anderson-Lopez and Robert Lopez, and Idina Menzel performs the film version as Elsa. Its success helped transform Elsa from an originally conceived villain into a more sympathetic protagonist, prompting major changes to the film’s story.
“Show Yourself” is another Elsa song, but it appears in Frozen II. “For the First Time in Forever” is primarily Anna’s early-film song, while “Into the Unknown” is Elsa’s major musical number in the sequel.