Mousethief, the question for me remains, why did Calvin, Luther, et al, get it into their heads to consider all instrumental music in church evil? I can imagine them reacting against what they judged to be wild goings-on involving instrumental music. But they all would have read Biblical references to the use of instruments in worship; how did they get from there to such blanket negativity?

Howard, again I'm happy to learn something here about the thinking of the thinking of the Orthodox church.

If any person, or group, simply finds it more conducive to worship with unacompanied voices, I have nothing in the world against that. I would just disagree with anyone who condemned the use of instruments in church as some sort of evil. Not rise up against 'em, just disagree with 'em.