Idina Menzel auditioned for the part of Rapunzel in Disney’s previous fairytale, Tangled (2010). Even though Menzel didn’t get the part, a Disney casting director recorded her audition and two years later, it got her the part of Elsa in Frozen where she sings ‘First Time In Forever’ with Kristen Bell.
Like her Frozen co-star Menzel, Kristen Bell also auditioned for the part of Rapunzel for Tangled.
Frozen adds another Disney adaptation of the works of Hans Christian Andersen, a famed and influential Danish fairy tale poet and author of “The Red Shoes”, “The Emperor’s New Clothes”, “The Ugly Duckling”, “The Steadfast Tin Soldier”, “The Little Match Girl”, “The Little Mermaid”, and “The Snow Queen”; the last of which this movie is based on. Previous adaptations of Andersen’s fairy tales into animated short or feature-length films: The Little Mermaid (1989), The Little Matchgirl (2006), “The Steadfast Tin Soldier” segment in Fantasia/2000 (1999), the “Ugly Duckling” plot element in Lilo & Stitch (2002), and the title of The Emperor’s New Groove (2000) is derived from that of “The Emperor’s New Clothes.” – IMDB