Julián Carrillo Trujillo (January 28, 1875 – September 9, 1965) was a Mexican composer, conductor, violinist and music theorist, famous for developing a theory of microtonal music which he dubbed “The Thirteenth Sound” (El Sonido 13).
Carrillo was born on January 28, 1875, in Ahualulco, a village in the state of San Luis Potosí. He was the last of the 19 children of Nabor Carrillo and Antonia Trujillo.
Delìrivm Còrdia 