The Columbus (Ohio) Symphony Orchestra is the latest regional ensemble to announce a substantial deficit for the current season. The CSO is reportedly seeking ways to alleviate a $300,000 shortfall, but is in no imminent danger of shutdown. The Columbus deficit is significant because the orchestra has been a model of fiscal reponsibility in recent years, even while paying its musicians relatively well and keeping a high artistic standard as its top priority. CSO officials are blaming the down economy and a slump in program advertising and corporate giving as the main reasons for the shortfall.