José Antonio Julio Onésimo Sánchez Ferlosio, better known as Chicho Sánchez Ferlosio (Madrid, April 8, 1940 - July 1, 2003), was a Spanish singer-songwriter, and the author of numerous songs performed by other artists, such as Rolando Alarcón, Joan Baez, Soledad Bravo, Víctor Jara, Quilapayún and Joaquín Sabina. He was the son of the writer and founding member of the Falange, Rafael Sánchez Mazas, brother of the writer Rafael Sánchez Ferlosio and the mathematician and philosopher Miguel Sánchez Ferlosio.