What is shruti box?

Shruti box, also known as a sruti box or surpeti, is a small hand-pumped instrument used in traditional Indian music to provide a drone accompaniment to vocal or instrumental performances. It consists of a wooden box with bellows and a number of reeds inside that produce a continuous sound when air is pumped through them.

The shruti box is used to create a steady drone of a single note or chord, which helps to establish the tonal center or key of a musical composition. It is often used in Indian classical music, devotional music, and other traditional genres to create a harmonic and rhythmic foundation for the music.

Shruti boxes come in various sizes and tunings, with some models offering multiple drones or notes for more versatility. They are typically played by pressing and releasing the bellows while adjusting the pitch using stops or levers on the instrument.

Overall, the shruti box plays an essential role in Indian music by providing a consistent and harmonious drone accompaniment that enhances the overall performance.