Who We Are The Brazos Chamber Orchestra, a nonprofit organization, was founded in the fall of 1998. The BCO is in it’s 19th year of free concerts. Where We Serve The Brazos Chamber Orchestra, composed of musicians from the Dallas/Fort Worth Metroplex, serves the citizens of Johnson County and the surrounding area. What We Play The Brazos Chamber Orchestra plays an eclectic blend of orchestral music, including Classical, Big Band, Movie Tunes, Americana and Pop. What We Want Come and enjoy an evening with friends and family as our 50 piece orchestra brings big city music to small towns near you! We are accepting donations online for the BCO capital campaign 2017-2018. Thank you for supporting the Brazos Chamber Orchestra, all donations are tax deductible.