an Entity references as follows:
Juan Hidalgo de Polanco (28 September 1614 – 31 March 1685) was a Spanish composer and harpist who became the most influential composer of his time in the Hispanic world writing the music for the first two operas created in Spanish. He is considered by many to be the father of Spanish Opera and of the Zarzuela His life is the basis of a novel, The Harpist of Madrid, by the English author Gordon Thomas.