The Pittsburgh Symphony Orchestra (PSO) is an American symphony orchestra, based at Heinz Hall in the Cultural District of Pittsburgh, Pennsylvania.Since 2005, this PSO has formally been lacking a single music director. During this current period, a new collective bargaining agreement was in effect, which gave the musicians increased authority over matters of running the orchestra such as the hiring of musicians and choice of repertoire. . User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.
