You know, schools need to do this more often. We always hear how athletics build character and camaraderie, but that would be mostly true within the context of your own team. But put some choirs together and you get a real sense of group building. Sure, each choir steps up to do their best in the presence of their peers. But they also listen intently to the other choirs and truly wish each choir to sing well. And then you put them together to actually work together in harmony and voila - you have built a group dynamic that transcends the individual. The singers give up a bit of the "me" to become the "we." This is a POWERFUL statement that can change the way to view the world in all its diversity.