The Peninsula Symphony was founded by Russian-born violinist/conductor Aaron Sten. In 1949, Aaron Sten became conductor of a small Redwood City group of musicians that he met while buying a house. Shortly after, a group of about 32 San Mateo musicians under the name The Peninsula Symphony disbanded and joined Aaron Sten's group. The resulting group of about 60 musicians formed an orchestra under the name Sequoia Symphony Orchestra and performed their first season. By the end of the second season, the name had changed to the Peninsula Symphony and in 1951, the non-profit Peninsula Symphony Association was incorporated. In that very first year, many features were established which were to become trademarks of the Peninsula Symphony: four concerts in October, January, March, and May; a balanced musical program featuring first-class guest artists; an attractive concert program with informative notes; and strong support from the community. In 1951, under Vincent Guida, symphony clarinetist and business manager, the organization was incorporated as a non-profit association, and a formal board was chosen.