Can musicians be replaced?

Just as I was trying to write some chants for striking members of the Cleveland Orchestra (“Heck no, we won’t blow”?), comes word their one-day strike is over. Terms of the settlement — pay was the big issue — were not disclosed.

Perhaps orchestra officials showed them this:

Sure, it’s not, well, the Cleveland Orchestra, but it does lead to some questions that orchestras must be asking. Why do people go to orchestra concerts? Is it for the “liveness” of the music or the performers playing it? Can they be replaced?