A missionary was going in to the most remote section of Africa. He found a native guide that would take him upstream to a tribe of headhunters cut off from civilization. 

In the distance, they could hear drums. "What is that drumming? he asked nervously.

The native replied, "Drums okay, but if they stop, that would be very bad."

The drums continued for three days as they got closer to the headhunters' village. Then without warning, the drums suddenly stopped.

With panic in his voice, the missionary called out to the guide, "The drums have stopped! What happens now?"

The guide crouched down, covered his head with his hands, and, with despair in his voice, answered, "Tuba solo."