Algodonales is a city located in the province of Cádiz, Spain. According to the 2002 census, the city has a population of 5,607 inhabitants. The nearest cities are Zahara de la Sierra and Olvera. Algodonales is located in the Sierra de Lijar within the Sierra de Grazalema.

Raul Diaz is a hornist.

He was born in Venezuela where he attended the Vicente Emilio Sojo and Simon Bolivar Conservatories of music, and then performed professionally for several years in South America.

In 1983 he continued his musical studies in England at the Guildhall School of Music and Drama where he was taught by Anthony Halstead and Jeffrey Bryant. While there he won a number of prizes including the Philip Jones Brass Prize and, inspired by Anthony Halstead, he became interested in the natural horn and baroque performance practice.

Since leaving college he has enjoyed a varied freelance career on both the modern and natural horn, playing with many orchestras including the Royal Philharmonic Orchestra, Philharmonia Orchestra, Academy of Ancient Music, English Concert, Orchestre Révolutionnaire et Romantique, Le Concert des Nations, Hanover Band and Drottningholm Theater Orchestra.

Díaz has also worked as a teacher at the Guildhall School of Music and Drama and has been invited to give Master Classes in Spain, Germany, Indonesia, Philippines and in both North and South America.