GSO meaning in Community ?

The Gamer Symphony Orchestra at the University of Maryland (often referred to as the GSO, UMGSO, or UMDGSO) is a student-run symphony orchestra and chorus at the University of Maryland. The orchestra is the first collegiate ensemble to draw its repertoire exclusively from the music of video games. Most of GSO's members are non-music majors The orchestra holds a free concert every semester during the academic year and yearly charity fundraisers that benefit the Children's National Medical Center in Washington, D.C.