Mostly joking, but have these kids put their project online? I'd love for my kids to get this kind of project going at their school.
"By what means would authors and songwriters make money if copyright ceased on exist, or even was much more limited?"
Did authors and songwriters exist during the Renaissance?
All discussion and arguments around this issue assumes that the status quo is good, has always been good and would continue to be good if not for those darn pesky kids on the internet.