Born in Buenos Aires, Julio Salvador Sagreras (22 November 1879 – 20 July 1942) who wrote El Colibri was an Argentine guitarist, pedagogue, and composer. Both his parents were guitarists who taught him the guitar very early. Julio Sagreras participated in concerts from the age of 6. At age 12, he studied piano and composition. He progressed quickly and became a professor of guitar at the Académia de Bellas Artes in 1899. – Xuefei Yang Wikipedia – Xuefei Yang Website
