This is also referred to as the Twin Drum. This drum is played with two sticks. The two drums are of different sizes and while the right one produces a louder sound, the left one produces a looser (and deeper) sound. The drums which have only the top side covered either with the skin of the cow or a buffalo. The wood used is from Kos, Kohomba and Milla trees. They used special sticks to play drums and the wood is from a creeper known as Kirindi. A book on how to play the Thammattama using Western Notation was published in 2011