A man (call him Horace) went on a safari in darkest Africa with a bunch of other people and some native guides. They traveled on foot, going deep into the jungle where they could hear the screeching of birds and howling of wild cats and other fierce wild animals. After a few days of travel, Horace came to notice that there was a constant drumming noise in the background. He asked the leader of the guides what the drumming was. He got no answer, just a stony silence. The drumming continued all day and all night for the next several days. In fact, as they traveled deeper into the jungle the drumming got even louder. Horace tried again to find out what the drumming meant by asking the other native guides, but he still got no answer. Finally one morning, after days of marching to this drumming (which by now was sounding quite ominous), the drums suddenly stopped. The native guides screamed and ran into the jungle to hide in the undergrowth. The leader remained behind with his charges, but he was trembling with fear. Horace asked "What is wrong? Why have the drums stopped?"
The native guide replied "Very bad."
"What?" asked Horace, who was expecting the worst.
The guide answered "When drum stops, very bad — next comes viola solo!"