Ravinia Festival Founded in 1904, the non-profit Ravinia Festival is the oldest outdoor music festival in North America and is lauded for presenting world-class music. The festival attracts about 600,000 listeners to more than 120 events that span all genres from classical music to jazz to music theater over each three-month summer season. The Festival's outreach and education efforts provide relevant programs in schools, communities and at the Festival. We educate, expand cultural options, and encourage involvement from audiences who would not otherwise experience the infinite variety of music offered at Ravinia.