The Portland Symphony Orchestra (PSO) is a professional orchestra based in Portland, Maine. Founded in 1923, it is one of the oldest orchestras in the United States. The PSO performs a variety of concerts, including classical, pops, and family-friendly events, showcasing a diverse repertoire that appeals to a wide audience. The orchestra is known for its commitment to community engagement and education, offering programs that connect with local schools and organizations. The PSO also collaborates with various artists and conductors, enhancing its performances and enriching the cultural landscape of Maine.