Gordang Sambilan is a traditional art form of the Batak Mandailing tribe. "Gordang" means drum or large drum, while "sambilan" means nine. Gordang Sambilan consists of nine drums of varying lengths and diameters, each producing a different note. Typically, it is played by six people. The smallest drums, numbers 1 and 2, are called taba-taba; drum 3 is called tepe-tepe; drum 4 is kudong-kudong; drum 5 is kudong-kudong nabalik; drum 6 is pasilion; and drums 7, 8, and 9 are known as jangat. Originally, Gordang Sambilan was only played during sacred ceremonies. However, as social culture has evolved, it is now commonly heard at weddings, welcoming ceremonies, and major holidays. As a cherished part of Indonesia's cultural heritage, Gordang Sambilan has even been performed at the presidential palace.