Gendang pair and gong KartomiMargaret J. KartomiHidris 2017 For male participants. A pair of drummers from the Talang Mamak ethnic group (semi-nomadic Malay forest dwelling people) performs interlocking rhythms on the gendang (double-headed drum) to accompany a demonstration of the local form of the art of self defence. The function of the gong is to mark the main beat in quadruple metre. Copyright 1984. Notes prepared by Bronia Kornhauser with Margaret Kartomi, School of Music-Conservatorium, Monash University. Photography by Hidris Kartomi.