The Terre Haute Symphony Orchestra, established in 1926, is the oldest professional orchestra in the state of Indiana, predating the Indianapolis Symphony by four years. The Terre Haute Symphony started as a volunteer group of musicians who provided community entertainment, and has evolved into a group of paid professional musicians who complete auditions to demonstrate their skill level. A series of concerts is offered from September through April as well as a free Children's Concert for approximately 3,000 fourth graders from the Wabash Valley.