The Longmont Symphony Orchestra was founded in 1966 as the Longmont Symphony Society, Inc.  Its mission is to foster and promote the appreciation and understanding of symphonic music through performances and educational programs.  Each year, the orchestra performs over 10 concerts, which are enjoyed by more than 15,000 people. Although the Longmont Symphony Orchesra primarily serves the citizens of the City of Longmont, its sphere of influence includes the entire St. Vrain Valley, including other communities in Boulder, Weld, Larimer, Broomfield and Adams Counties.