Nomtom

In Indian music, the jor (Hindi: जोर, [dʒoːr]; also spelled jod and jhor) is a formal section of composition in the long elaboration (alap) of a raga that forms the beginning of a performance. It comes after alap and precedes jhala, the climax. Jor is the instrumental equivalent of nomtom in the dhrupad vocal style of Indian music. Both have a simple pulse but no well-defined rhythmic cycle.

...
Wikipedia