Kettledrum

A kettledrum (or kettle drum) (/ˈkɛtldrʌm/) is a type of percussion instrument in which a membrane is stretched over a large hemispherical bowl. Traditionally, the bowl is made of a metal such as copper or bronze, but materials such as clay and wood are also used.

In Western music, timpani are the most commonly used types of kettledrums, so much so that their names have almost become synonymous. However, most cultures, especially those of South Asia and the Middle East, have their own distinct types of kettledrums. In the Hornbostel–Sachs system, kettledrums were given the number '211.1' as part of their own unique classification.