In response to a decision by some Broadway musicals to drastically cut the number of live performers in the orchestra pit, the Broadway musicians’ union is waging an aggressive battle to save jobs. The show at the center of the controversy is the jukebox musical “Priscilla, Queen of the Desert,” which features disco favorites. The show currently only has nine musicians playing live in the orchestra. The rest of the music comes from a pre-recorded track. We talk with Marshall Coid, a lead on stage violinist in the Broadway show, “Chicago.” Boyd has been performing on Broadway for 30 years, as an actor, singer and violinist.