What are the 4 basic categories of Indian instrument?

Chordophones: these instruments produce sound through the vibration of a string. The most common chordophones in India are the sitar, Santoor, and Sarod.

Aerophones: these instruments produce sound through the vibration of air. The most common aerophones in India are the bansuri, Shehnai, and Harmonium.

Membranophones: these instruments produce sound through the vibration of a membrane. The most common membranophones in India are the tabla, Dhol, and Dholak.

Idiophones: these instruments produce sound through the vibration of the instrument itself. The most common idiophones in India are the ghungroo, Manjira, and cymbals.