The latest hot spot in the increasingly shaky world of American orchestras is Louisville, Kentucky, where musicians of the Louisville Orchestra are filing for unemployment (in tux and tails, no less) and refusing to attend rehearsals after the orchestra’s management missed payroll and demanded that a permanent pay cut be adopted immediately. The musicians insist that they were willing to play regardless of whether payroll was met, but balked when management refused to allow them leave to seek other employment while the crisis continues. The orchestra is looking at an estimated $800,000 deficit on a budget of $6.1 million for the current season.