The new orchestra season begins. But “don’t be surprised if you see orchestras, including the Baltimore Symphony and Philadelphia Orchestra, reopening labor contracts, well before expiration dates, in search of budget savings. Such measures, once unthinkable, may soon be common as organizations struggle to get their houses on solid ground. And all the usual things, like cut-backs in performances and costly repertoire, will continue, too. But let’s not get overly gloomy. At least not yet.” There are some bright spots…