The wooden tuntungan is a percussion plank with jar resonators, also played during the harvest season for thanksgiving. The gabbang is a bamboo split into five, and arranged like a xylophone. Small children near the fields played it in order to guard the crops against prying animals. The kwintangan batakan is an earlier form of gabbang which has six, seven, or nine bamboo pieces. The suling is a bamboo mouth flute used by the men in courting women. Another bamboo instrument used by the men in expressing love or admiration is the kulaing. The Kulintangan or kwintangan consists of several bronze gongs arranged according to size, and used during celebrations such as weddings and graduations. Any individual played it in the home and after work, for self-expression and relaxation. The agong is a percussion instrument used to announce marriage or for tolling the dead. The jabujabu (djabu-djabu) is a type of drum that summons the people to prayer (Nicolas 1977: 100–108; Sherfan 1976:195–199). There are three main types of Yakan vocal music: the lugu and other melodies used in reading the Quran and other religious books; the kalangan or songs which may be further reclassified into Jamiluddin and Lunsey; and the katakata, nahana, yaya, lembukayu, and sa-il, among others. The kalangan, jamiluddin, katakata, nahana, and yaya are sung solo, while the lunsey, sa-il, meglubulebu seputangen, and lembukayu involves singers from two groups singing solo as they answer each other. The kalangan, jamiluddin, lunsey, and lembukayu are courting songs. The katakata, jamiluddin, and nahana may also narrate the history of the Yakan people. The katakata is a long traditional song narrating the lives, loves, and historical backgrounds of people who lived during early times. The Yakan believed that such stories originated from people who lived in another world. The katakata is sung only at night, at a big gathering with food served by the host or hostess. The singing, in episodes, may last for several nights. The singer lies on a mat, the back supported by several pillows.