El Sistema is a publicly financed voluntary sector music education program in Venezuela, founded in 1975 by economist and musician José Antonio Abreu under the name of Social Action for Music. For many years its official name was Fundación del Estado para el Sistema Nacional de las Orquestas Juveniles e Infantiles de Venezuela, (FESNOJIV), which is sometimes translated into English as "National Network of Youth and Children's Orchestras of Venezuela".
It has recently changed to Fundación Musical Simón Bolívar (FMSB) but it is still widely known by the FESNOJIV acronym.
El Sistema is a state foundation which watches over Venezuela's 125 youth orchestras and the instrumental training programmes which make them possible. The organization has 31 symphony orchestras, and between 310,000 to 370,000 children attend its music schools around the country. 70 to 90 percent of the students come from poor socio-economic backgrounds.