What is an Eo?

An eo is a traditional Korean percussion instrument used in ceremonial and court music. It is a carved wooden instrument shaped like a tiger and is primarily used for signaling rather than continuous rhythm.

The eo is typically struck with a wooden stick along its ridged back, producing a series of sharp, scraping or knocking sounds. This distinctive sound is used to mark specific moments in a performance.

In traditional Korean music, the eo is most often used to signal the end of a musical piece or section. It works in contrast with the chuk, which signals the beginning, helping structure the performance.

The instrument is commonly found in formal settings such as court music and ritual ceremonies, where precise timing and clear cues are important.

Today, the eo remains an important part of Korean traditional music, preserving its ceremonial role and cultural significance in historical performances.