Gata Bera and Yak Bera
The gata bera and the yak bera are two of Sri Lanka’s most important musical instruments, and are both played with the hands.
The gata bera, also known as the wedding drum, is usually about two feet in length. The trunk of the drum is made from asala, kohomba or kos timber, while different skins are used for the two membranes at either end, which are then bound with deer skin strings. Cow skin is tied to one end of the drum, which makes a different sound when hit with the hand from the monkey skin tied to the other.
The yak bera, also a two-ended drum, is made from the timber from the kithul tree and is about three feet in length. The part that’s hit is made from the stomach lining of a cow. It’s regularly used for low country dances involving masks and rituals.