The Chattanooga Symphony and Opera, also known as CSO, is a combined symphony orchestra and opera company in Chattanooga, Tennessee. At the time of the merger in 1985, it was the only such combined organization in the United States. The CSO also offers several youth programs; the Chattanooga Symphony and Opera Youth Orchestra (CSOYO). The CSOYO has four groups; Prelude, Etude, Philharmonic, and Symphony. The Prelude and Etude groups are strings only, and are targeted towards beginners Elementary and Middle School aged. Prelude and Etude are conducted by Cellist, Amy Shannon. The upper two Orchestras, Philharmonic and Symphony, are full orchestras, with strings, winds, and percussion. Both orchestras are directed towards upper middle school aged students, and high school students. The Philh