The nadaswaram is a double-reed wind instrument widespread in South India. It is a large conical wooden pipe, related to the North Indian shehnai but considerably larger in size, with a powerful, bright, and extraordinarily loud sound — considered one of the loudest non-brass acoustic instruments in the world.
It is precisely because of the power of its sound that the nadaswaram is traditionally intended for open-air playing — at temple processions, weddings, and other celebrations, where it can be heard over a great distance. It usually performs in a pair with the thavil drum, and this ensemble is considered extremely auspicious and sacred. Despite its large size, skilful performers draw from the nadaswaram the subtle melodic ornaments and microtones characteristic of classical Carnatic music, which makes playing it a truly high art.
