Musicians tend to tell lots of stories about funny things that have happened on stage during concerts. Often the stories are about disasters or near-disasters, and to be honest, they usually seem much funnier later on than the events themselves felt when they were actually happening. But one of the funniest stories I know isn’t about a disaster. It was told to me by the former second violinist of a very famous string quartet. The quartet had played a concert one night, had been up very late, and