On Wikipedia https://en.wikipedia.org/wiki/Argentine_National_Symphony_Orchestra
Creation 1948
City Buenos Aires, Autonomous City of Buenos Aires, Argentina
Country Argentina

The symphony was created under the aegis of the Secretariat of Culture, and with 92 musicians. Directed initially by Roberto Kinsky, its first concert took place at the renowned Colón Opera House on November 30, 1949.

The 1955 overthrow of President Juan Perón led to the State Symphony's reorganization as the Argentine National Symphony. Its first post-Perón conductor, Juan José Castro, had returned from exile and took the baton to acclaim on November 11. He worked to widen its appeal by incorporating works by contemporary composers such as Olivier Messiaen, Paul Hindemith, Igor Stravinsky and Béla Bartók, and by securing guest conductors such as Willem van Otterloo and Igor Stravinsky, who conducted performances of his own works in 1960. Frustrated by bureaucratic tedium, however, Castro resigned in October.

The symphony followed a more traditional line after Víctor Tevah's appointment as chief conductor in 1961, and the contemporary music programs were cancelled.

The installation of a dictatorship under General Juan Carlos Onganía led to a marked influence of the Catholic Church over the repertoire, and its new director, Juan Carlos Zorzi, offered up mostly requiems, masses and te deums, as well as frequent collaborations with the Argentine Catholic University's choir. Losing numerous musicians, Zorzi resigned, and though the 1970 appointment of Spanish conductor Jacques Bodmer as director was followed by a sponsorship from the Italian Embassy, lack of federal support kept the symphony on the brink of closure throughout 1971 and 1972. The election of Peronist candidate Héctor Cámpora in 1973 brought with it restored support for the institution, including disbursement for a year's worth of unpaid salaries. Ongoing budgetary problems prompted the new director, Jorge Rotter, to schedule free concerts to the public every other Wednesday as a form of protest during 1987. A renewed crisis in 1990 led to his resignation and the suspension of activities.

The National Symphony Orchestra has persisted over often overwhelming odds, not the least of which has been its lack of a permanent home (unofficially located in the Cervantes Theatre). Maintaining a loyal esprit de corps among its musicians, who have on numerous past occasions performed without pay, the symphony has also attracted figures of international stature on the classical music stage. Wikipedia