The eo (Korean: 어; Hanja: 敔) or tiger is a wooden percussion instrument carved in the shape of a tiger with a serrated back,[1] played by running a bamboo whisk across the serrations.
The instrument is often played to punctuate the ends of sections of music.
On the back of the tiger is a jeoeo (저어, 齟齬) that looks like 27 saws.
When the music stops, the performer knocks and scratches this jeoeo through the jin (진) and gives a signal.
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