Today is April 11. On this day on 1938, the Society for the Preservation of Barbershop Quartet Singing in America organized itself into a body; therefore, it is Barbershop Quartet Day as well. Also on this day, in 1945, Allied troops entered the Buchenwald concentration camp, near Weimar, Germany. It was the first of the Nazi concentration camps to be liberated.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.