Elsa (Frozen) of the song "Let It Go", with critics frequently calling her a "powerhouse". Attempts were made as early as 1937 by Walt Disney to adapt Hans Christian Andersen's fairy tale, "The Snow Queen", into a film. The tale focuses on two children, one named Gerda, who served as the basis for Princess Anna, and the other named Kai, who is "cursed with negativity" after his heart is pierced with a shard of glass from an enchanted mirror and is later kidnapped by the Snow Queen. However, Disney struggled with creating a believable, multi-dimensional adaption of the fairy tale's title character,
Frozen (2013 film) after the film's release), Disney had sold over three million "Frozen" costumes in North America alone. Wait times for the meet-and-greets at Disney Parks soon regularly exceeded four hours and forced management in February 2014 to indefinitely extend what was originally intended as a temporary film promotion. Disney Parks later put on a temporary event ("Frozen Summer Fun") at Disney's Hollywood Studios, then announced on September 12, 2014, that the Maelstrom ride at Epcot's Norway pavilion would be closed and replaced with a "Frozen"-based attraction, which opened in early 2016. On May 27, 2016, a live "Frozen" musical stage show