José del Refugio Sánchez Saldaña (3 May 1921, in Altamira, Tamaulipas – 6 October 2000, in Mexico City) better known as Cuco Sanchez was a Mexican singer and songwriter who wrote dozens of hits. José del Refugio Sánchez Saldaña (3 May 1921, in Altamira, Tamaulipas – 6 October 2000, in Mexico City) better known as Cuco Sanchez was a Mexican singer and songwriter who wrote dozens of hits.