On strike: The musicians of the Pittsburgh Symphony Orchestra have gone on strike for just the second time in the orchestra's 120-year history. The musicians, members of Local 60-471 of the American Federation of Musicians, and PSO management were unable to reach a new collective bargaining agreement after months of tense negotiations that were conducted in private. The PSO roster includes 99 musicians and two librarians, although a few positions are unfilled right now. Full details at post-gazette.com. (Photo by Darrell Sapp/Post-Gazette) #Pittsburgh #PGH #412 #Orchestra #PittsburghOrchestra #PittsburghSymphonyOrchestra #PSO #strike #PSOstrike #PGPhotos