Castillo has released several songs from the soundtrack of Grachi, sung alongside other members of the cast such as Sol Rodríguez, Kimberly Dos Ramos, Andrés Mercado, Maria Gabriela de Faria, Lance Dos Ramos and Willy Martin.
DOS | MS-DOS | John Dos Passos | Kimberly-Clark | Sergio Ramos | Kimberly Caldwell | São José dos Campos | Fidel V. Ramos | José Ramos-Horta | Campos dos Goytacazes | Kimberly, Wisconsin | Kimberly | Plaza Dos de Mayo | Mel Ramos | Kimberly Pressler | Junior dos Santos | José de Córdoba y Ramos | Graciano dos Santos Neves | Dos Pueblos High School | Dos Hermanas | Angra dos Reis | Wendell Ramos | Universidade do Vale do Rio dos Sinos | Un, dos, tres... responda otra vez | Sugar Ramos | Nathalia Ramos | Kimberly Williams-Paisley | Kimberly McCullough | Kimberly Kagan | José Eduardo dos Santos |