The ekkalam is an

aerophone An aerophone () is a musical instrument that produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes (which are respectively chordophones and membranophones), and without the vibration of the instru ...

instrument mainly used in Tamil Nadu, India. It consists of a large brass tube with one end having a bell. This instrument produces sound by vibration of air injected by the player, altering the pitch by changing the lip tension and the power of air flow. It is played in temple festivals or celebrations. Most of the sound produced travels straight outward from the bell. It is played along with a drum or another ekkalam.

References

* Premalatha, V. (1985) ''Music Through the Ages''. Sundeep Prakashan. Aerophones Indian musical instruments {{TamilNadu-stub