Drums with tubular bodies in which the diameter at the ends differs considerably; some minor departures from strict conicity, inevitably met, are disregarded here. Tightly stretched membranes enclose one or both ends, and are directly struck by the player using the hands or intermediate devices such as sticks.
Conical drums
Tubular drums
Double-skin conical drums
Hornbostel - Sachs
Single-skin conical drums