The Queensland Symphony Orchestra (QSO) is an Australian orchestra, based principally in Brisbane in the state of Queensland. 　　The QSO played its first concert on 26 March 1947, with the orchestra consisting of 45 musicians, conducted by Percy Code.John Farnsworth Hall was recruited from the Sydney Symphony Orchestra as the orchestra's first chief conductor. The orchestra played concerts in various Queensland cities and towns, such as Innisfail and Townsville, travelling up to 3500 miles a year in the process. 　　In 2001, the QSO was merged with the Queensland Philharmonic Orchestra, to form The Queensland Orchestra (TQO). On 14 October 2009, the orchestra announced a reversion of its name back to the Queensland Symphony Orchestra, effective in 2010.Since June 2013, the QSO's CEO is Sophie Galaise.