The Lyons Township High School Orchestra program under the direction of Jan Matthews performs five concerts per year, holds its own concerto competition, and tours regularly.
The LT Orchestra has participated in music festivals in St. Louis, Toronto, New York City, Cincinnati, Virginia Beach, Chicago, Boston, Orlando, and New Orleans. Additionally, the Orchestra has had the honor to perform at Symphony Center in Chicago, Orchestra Hall in Boston, and Krannert Center at the University of Illinois. The Orchestra toured Northern Italy in 2013, France in 2015 and Spain in 2017.
The orchestra department maintains an active chamber music program which performs throughout the community and which also presented a workshop at the 2007 & 2009 Illinois Music Educators State Conference.
LT Orchestra is comprised of 3 orchestras: Sinfonietta and Symphony Orchestra at North Campus and Concert Orchestra at South Campus. In addition, there is a South Campus and North Campus chamber orchestras.