Julian Antonio Carillo-Trujillo

Julian Antonio Carillo-Trujillo, commonly known as Julián Carrillo, was a Mexican composer and conductor born on January 6, 1875, and he passed away on September 9, 1965. He is best known for his pioneering work in microtonal music, particularly his development of the "13th sound" theory, which expanded traditional musical scales by incorporating microtones—intervals smaller than the conventional semitone. Carrillo's notable works include compositions such as "Sonata No. 1" and "Symphony No. 1," alongside numerous chamber and orchestral pieces that explore his microtonal concepts. His impact on music is significant, as he challenged conventional Western musical structures and inspired future generations of composers to explore microtonality. He also founded the "Orquesta Típica de México" and was involved in music education, promoting his theories and compositions throughout Mexico and beyond. Carrillo's innovative approaches have made him a notable figure in