The song Once Upon a December was written by Stephen Flaherty (music) and Lynn Ahrens (lyrics) for the animated film Anastasia (1997). Sung by Liz Callaway as the singing voice of the adult Anya, the song expresses the character’s fragmented childhood memories and her longing to discover her true identity. Its waltz-like melody and orchestral arrangement create a nostalgic atmosphere, while recurring musical themes connect it to the film’s story. Once Upon a December has become one of the best-known songs from Anastasia.