Disney's "Una Vez En Diciembre" is a Spanish-language musical number from the 1950 animated classic Cinderella. As part of the film's broader musical score, the track features the signature style of the era's composers, blending traditional folk melodies with orchestral arrangements typical of Disney productions of the mid-20th century. The song appears in the film's narrative, contributing to the romantic and festive atmosphere surrounding the holiday season. It stands as one of several non-English musical pieces included in the Cinderella soundtrack, showcasing the studio's practice of incorporating diverse languages to appeal to international audiences. The recording reflects the musical aesthetics of 1950s animation, utilizing vocal performances and instrumentation that defined the genre of animated musicals during that period.