Vibraslap

A vibraslap is a percussion instrument consisting of a piece of stiff wire (bent into a U-shape) connecting a wood ball to a hollow box of wood with metal “teeth” inside. The percussionist holds the metal wire in one hand and strikes the ball (usually against the palm of their other hand). The box acts as a resonating body for a metal mechanism placed inside with a number of loosely fastened pins or rivets that vibrate and rattle against the box The instrument is a modern version of the jawbone.

The Vibra-Slap's inventor was Martin Cohen. Cohen was told by percussionist Bob Rosengarden, "If you want to make some money, make a jawbone that doesn’t break." About the inventing process Cohen remembers, "I had never seen a jawbone before, but I had heard one on a Cal Tjader album. I found out that it was an animal skull that you would strike, and the sound would come from the teeth rattling in the loose sockets. So I took that concept and invented the Vibraslap, which was my first patent."

The Vibraslap descended from the African jawbone. This is the lower jawbone of a donkey or a zebra which has loose teeth that rattle when the instrument is stricken.