Music, as a universal language, has consistently played a prominent role in human life and exerted profound influence across various art forms, including cinema and animation. In successful musical animations around the world, music is used as an important tool in the processing of the narrative. Accordingly, examining the narrative role of music in transmitting socio-cultural concepts to children is of particular importance. This qualitative study analyzes the role of music in the narrative structure of children's musical animations and compares two successful foreign and domestic examples, the series "Esme & Roy" and "Rira's Tales." The interdisciplinary theoretical framework of this study relies on Rick Altman's musical genre theories, Philip Tagg's musical mood analysis, and Michael Toolan's narratology. The results of the research show that music in simple and understandable formats for children, with appropriate use of musical parameters, can play a decisive role in conveying cultural and social concepts, simultaneously with unraveling the story and based on the three-act structure of "suspense, action, and resolution." In the "Esme & Roy" series, the inclusion of a fixed song at a turning point and a variable song in other parts of the narrative makes it more engaging and strengthens the child's emotional bond with the characters. In contrast, "Rira's Tales," despite its cultural appeal, does not utilize the full potential of music in narrative due to its lack of use of the dialogic properties of musical form, lack of attention to the importance of resonance and tonality in retelling the narrative, and excessive reliance on verbal narration. Utilizing these patterns provides a successful path to understanding the role of music in children's animation and helps raise the standards of domestic musical production.