How do you build the music for an animated short film? In this talk, composer Csar Barajas will explore the creative process behind the soundtrack of "Teatro Secreto", winner of the Ariel Award for Best Animated Short Film. We will discover step by step how to find a story's sonic identity, build atmospheres, and use music to truly bring characters to life. Aside from breaking down the challenges and creative decisions of this project, born from the Fotogramas Vivos initiative in collaboration with Casa del Autor and Taller del Chucho, Csar will share key tools regarding the vital collaboration between composers and directors to craft narratives that deeply resonate with audiences.