Created in1993 the Portuguese Symphony Orchestra (PSO) is one of the artistic organisms of  the National Theater of São Carlos and has been developing a symphonic activity itself, including the regular programming of concerts and the participation in festivals of national and international music. It has a regular collaboration with Radiodifusão Portuguesa through the transmission of its concerts by Antena 2 and the participation in innitiatives of RDP itself, just as the Pedro de Freitas Branco Prize for Young Chiefs of Orchestra, Prize for Young Musicians-RDP and the International Tribune of Young Interpreters. Under other collaborations, its presence can stand out in the following events: 8th Tornement Eurovision of Young Musicians transmitted by Eurovision to around fiftheen countries (1996); closing concert of the 47th International Festival of Music and Dance from Granada (1997); concert of the Openning Gala of the Book Fair of Frankfurt; closing concert of Expo 98; Contemporary Music Festival of Alicante (2000); and Classical Theater Festival of Merida (2003).

 

The Orchestra has been performing within the opera and symphony seasons under the direction of remarkable conductors such as Rafael Frühbeck of Burgos, Alain Lombard, Nello Santi, Alberto Zedda, Harry Christophers, George Pehlivanian, Michel Plasson, Krzysztof Penderecki, Djansug Kakhidze, Milán Horvat, Jeffrey Tate and Iuri Ahronovitch, amoung others. The discography of the Orchestra has two CD's to the Marco Polo label, with  the Symphonies nbr 1 and nbr 5, and nbr 3 and nbr 6, by Joly Braga Santos, which he recorded under the direction of his first resident conductor, Álvaro Cassuto to whom it followed José Ramón Encinar (1999/2001) and Zoltán Peskó (2001/2004) in the same position. Donato Renzetti performed functions of First Conductor invited until the 2006/07 Season.
From the beginning of the Season 2008/09 Julia Jones holds the position of  Principal Conductor.