The Chau gong represents the most commonly thought of version of the ÒgongÓ.Ê It is used in symphony orchestras the world over, sometimes being referred to as a tam-tam.Ê It is not specifically pitched, containing a broad and complex combination of frequencies coupled with tremendous dynamic range and sustain.Ê The edge of the gong is turned back forming a ÒlipÓ which greatly supports the low frequencies present in the sound.