gong, percussion instrument consisting of a disk, usually with upturned edges, 3 ft (91 cm) or more in diameter in the modern orchestra, often made of bronze, and struck with a felt- or leather-covered mallet or drumstick. Of ancient origin—representations of the gong date back to the 6th cent. A.D.—it has also been called the tam-tam. First used in Western music in the funeral march of Gossec's Mirabeau (1791), the gong has since been a regular member of the European-type orchestra, but it is used sparingly. It is commonly used in East Asian music and in the gamelan music of Bali and Java.