Pittsburgh Ballet Theatre has reached an agreement with its 47 musicians to restore some live music to its performances for the 2006-07 season. PBT laid off its orchestra last summer and has been using recorded music this season – the musicians filed an unfair labor practices complaint in retaliation. “PBT leaders have promised to hire the musicians for two of the company’s five productions during its 2006-07 season, which will be announced in two weeks.”