Back in my musician days, I once took a class in 16th century counterpoint, which if you've never done it, is quite challenging. The instructor said that we wou

Back in my musician days, I once took a class in 16th century counterpoint, which if you've never done it, is quite challenging. The instructor said that we would need to sleep a lot to let our unconscious minds work in order to learn the material. He was right.