A safari is out deep in the jungles of Africa with their tour guide when one night, while camping they begin to hear drums coming from the trees all around them. They're distant but the rich city folk who are on the safari begin to worry. One of the campers asks the guide, "Where are those drums coming from?" The guide just smiles and says "Don't worry, there's nothing to fear. We only have to worry when the drumming stops." So the group feels a little more at ease.
The drumming continues for the next day but by nightfall the drums have become louder and sound closer. The campers begin to worry again and they ask the scout "Why are the drums getting louder? Are we still safe?" The guide just smiles and says "Yes we're fine. Don't worry, there's nothing to fear. We only have to worry when the drumming stops."
So all night and the next day the drumming continues to get louder and closer and the safari memebers are now sturring up into a full on panic. "Where are the drums coming from? We need to get to safty!" the exclaim. "Don't worry," the guide says "there's nothing to fear. We only have to worry when the drumming stops."
The next day the drumming is louder then anything anyone has heard. It seems to becoming from right behind every bush and the campers are stricken with fear and just when they think they can't take it anymore - silence - the drumming stops. They all turn to look at the guide who's face has turned white and panic stricken.
"My god! What is it!!" A camper screams.
The guide opens his mouth slowly.... "Bass solo..." He says.