Moktak

The moktak is the instrument a visitor to a Korean temple hears first and remembers longest: a dry, hollow, slightly hollow-bellied knock, struck at walking pace under chanting. Its job is metrical. Korean liturgical chanting is long, communal and largely unaccompanied, and the wooden fish holds a room of voices together through recitation that can run for an hour or more. A practised chanter varies the stroke to signal a change of section, an acceleration towards the end of a passage, or the moment a congregation should bow, so the instrument is also a set of instructions that need no words.

Physically it is a block of hardwood, hollowed through a slit that runs along the underside, with the two lips of the slit acting as the fish's mouth. The wood is chosen and seasoned for tone, and the walls are thinned until the block rings rather than thuds. Handheld instruments are small enough to carry in one hand with the beater in the other. The same principle scaled up produces the mogeo, the long hanging fish carved with a dragon's head that lives in the temple's bell pavilion, hollowed deeply enough that a person can strike the inside of it with a two handled club. The beater is a separate object with its own shaping, weighted at the head and balanced so that a chanter can strike for an hour without tiring, and a worn instrument is repaired and re-thinned rather than replaced.

In a Korean temple the wooden fish belongs to a set. The bell pavilion holds four instruments, sounded in order at dawn and at dusk: the great bronze bell, the dharma drum, the cloud shaped metal plate and the hanging wooden fish. The tradition assigns each an audience. The bell is struck for beings suffering in the hells, the drum for animals, the flat cloud plate for beings that move through the air, and the fish for those that live in water. Sounded together they are understood to reach across the whole of the living world, so the daily opening and closing of a monastery is framed as an address to everything alive rather than as a call to the monks.

The fish shape carries a separate explanation that is repeated widely and should be reported as tradition rather than as history: a fish does not close its eyes, so the instrument stands for a wakefulness that does not lapse, which is the quality monastic discipline is trying to cultivate. Variants of the story attach a moral tale to it, of a monk reborn as a fish with a tree growing from its back. Nothing in the archaeological or textual record fixes the origin of the form, and the wooden fish is shared with Chinese, Japanese and Vietnamese practice, so the Korean instrument should be read as one member of an East Asian family rather than as a local invention.