After successfully completing 12 episodes with a total of 30 songs re-written in Spanish, Castillo and Valenzuela joined McKenzie and Jemaine Clement on their first LA show to performance at the El Rey Theater on July 11, 2007, where the Spanish Conchords sang "Think Think about" (Pien Piensa un Poco).
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He became well known for his roles in the Spanish language performing songs for HBO's Flight of the Conchords, Happy Feet, Charlie and the Chocolate Factory and Corpse Bride.
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In 2007, Castillo was signed as the Spanish voice of Bret McKenzie in HBO television series Flight of the Conchords, as well to co-writing the Spanish lyrics working with songwriter Claudia Castillo and sound Engineer "Waldo Valenzuela".
Patricio Aylwin | Sergio Badilla Castillo | San Patricio | Bernal Díaz del Castillo | San Patricio, Texas | San Patricio, New Mexico | Roberto Castillo Sandoval | Patricio Henriquez | Montealegre del Castillo | Jaime Castillo Velasco | Celso Advento Castillo | Castillo de San Marcos | Castillo de la Real Fuerza | Antonio Cánovas del Castillo | Abelardo Castillo | Patricio Manns | Patricio de la Escosura | Patricio Contreras | Patricio Coll | Juan del Castillo | José Videla Castillo | José Chavéz y Castillo | Isabella Castillo | Francisco Castillo Fajardo, Marquis of Villadarias | Eliecer Castillo | El Castillo | Castillo de Teayo, Veracruz | Castillo de Teayo | Castillo de San Pedro de la Roca | Battle of San Patricio |