New Orleans Opera is back on the stage, and amazingly, much of the audience seems to be back, too. But the challenges aren’t over for the company, as it deals with its too-small new home, the loss of many members of its pit orchestra to other ensembles around the country, and countless other logistical and musical issues that serve as a constant reminder of the devastation wrought by Katrina. “Many opera-goers and corporate sponsors who left the city haven’t returned yet either. With the city’s more pressing needs, the opera has had to make a strong case to get philanthropic dollars.”