The musical instruments of the Dyaks are of a more or less primitive type, but when played together, the result is not unpleasing. Those employed as an accompaniment to the Sword Dance or the War Dance are brass gongs of different sizes and a variety of drums. First there is the deep-sounding brass _tawak_, the sound of which travels a great distance, and which, when struck in a peculiar manner, is the danger signal in times of war. Next in order of importance comes the smaller brass gong which is called the _chanang_, and lastly the _engkrumong_ of eight small brass gongs of different sizes arranged in order in a long open box. The player of the _engkrumong_ has a stick in each hand, and strikes these different gongs in quick succession. They have numerous drums of different shapes and sizes. They are made of different kinds of wood, with deer-skin or monkey-skin tightly stretched over one or both ends. The effect of all these instruments of percussion played together is inspiring, and not at all displeasing. There is no harsh discordant clanging, as is so often the case in the music of primitive races. There are different ways of striking the drums and other instruments, and each of these ways has a distinctive name. The rhythm of the music of the Sword Dance differs entirely from that of the War Dance, and for each of these dances there are various different arrangements for the musical instruments. Among their wind instruments is the _engkrurai_, which is constructed of a number of bamboo tubes fixed in an empty gourd, the long stem of which forms the mouth-piece. All the notes can be sounded together, and combinations of notes or single notes can be produced from it by shutting or opening finger-holes placed laterally at the lower end of the bamboo tubes. There are generally seven bamboo tubes, six of them arranged in a circle round a larger and longer central one. All seven are furnished with a reed at the base, where they are inserted into the gourd. Holes are cut in the six outer pipes for fingering. The central pipe is an open or drone-pipe, the tone of which is intensified by fixing a loose cap of bamboo on the upper end. It is played by blowing air into the neck of the gourd, or by drawing in the breath, according to the effect desired. The volume of sound is not great, and the music produced is not unlike that of the Scotch bagpipes played very softly and very badly. They have a flute, or rather flageolet (_ensuling_), made of bamboo, with a plug at the mouth-hole. It is blown at the end, and there are three or four finger-holes, so that different notes can be produced.