The igba is a tom-tom that has a beating surface of the same approximate diameter as a bongo. An igba may be as small as 7 inches, or as tall as 3 feet. Traditionally, the deeper shelled igba are played with the hand, while the shorter drums are played with a curved stick. In an ensemble these drums often lead, and are used to "talk" by the talking drummers. By hammering on the tuning wedges which line the perimeter of the skin, the player tightens the drum's skin (usually made from antelope) to achieve the desired pitch and tone.