On Thursday, April 24, the Choral Union, a mixture of singers from the University of Missouri and the town of Columbia, Missouri, will be a major player in the world-premier performance of “The War Amongst Families and Neighbors,” an oratorio based on the state of Missouri’s role in the United States’ Civil War. The composer, Stefan Freund, skillfully weaves together letters, newspaper articles, and other historical documents to take the chorus, orchestra, three vocal soloists, and the audience on a…..