[2][3] Some of his most popular songs include Caballo viejo, Tonada de luna llena and La vaca Mariposa.

This style of music has since been performed by artists such as Argentina's Mercedes Sosa, Brazil's Caetano Veloso, Spain's Joan Manuel Serrat, Peru's Susana Baca, Puerto Rico's Danny Rivera, and Venezuelans Franco De Vita, Soledad Bravo, Juan Carlos Salazar, Carlos Baute and José Luis Rodríguez, among others.

[8] After his father's death in 1940, his family relocated to San Juan de los Morros, where he finished primary school and started receiving music lessons from Ramón Ziegler.

When he turned 15, he started working as an assistant of the local Siboney Orchestra and soon after performed as comedian under the pseudonym «el Chato».

[4][15] Díaz composed and authored the music & lyrics of "Caballo viejo", first released in 1980 (Venezuela) under the album titled "Golpe y Pasaje", Label Palacio de la Música.

Simón Díaz's compositions have been performed by artists such as "Roberto Torres", Plácido Domingo,[16] Ray Conniff,[17] Julio Iglesias,[18] Celia Cruz,[16] Rubén Blades,[16] Gilberto Santa Rosa,[16] Gipsy Kings,[16] Ivan Lins,[19] Joyce,[20] Cheo Feliciano,[21] Juan Gabriel,[16] María Dolores Pradera,[22] Tania Libertad,[23] Ry Cooder[24] and Devendra Banhart[4][16]

One of these shows, Contesta por tío Simón, aired on Venezolana de Television for over 10 years and was devoted to teaching popular culture to children.

[4][27]After battling Alzheimer's disease for many years, his son, Bettsimar Díaz García, announced that he died at his home in Caracas on 19 February 2014.