be able to sing over the crowds to be heard, to project.

Well, there's that.

That depends on, of course, the context of what... your audience and where you are whether you're outdoors or indoors but i think that most of these songs came from an in-group of people who were fairly sensitive to these ideas and who were not necessarily looking for rough entertainment but were interested in thoughtful poetry and thoughtful ideas and very subtle emotional ways of looking at life and death as well.

And we include travel in that because travel is a life or death activity.

And of course, these singers were not monks and nuns and canons of the cathedral.

They were probably professionals.

who did that for a living and we know that from descriptions of these people, how they traveled from place to place and they negotiated a fee and they agreed to take the instrument out of its case and they tuned it up and started to sing and were paid or given something in exchange for their talent.

Well, I am curious about which particular modes, because, you know.