The
beobgeum gayageum is 160 cm long by 30 cm wide by 10 cm deep. Its body is made of a single piece of
paulownia wood. The
resonator chamber is hollowed out of the piece of paulownia. The
sanjo gayageum is about 142 cm long by 23 cm wide by 10 cm deep. The
soundboard is made of paulownia, but the sides and back are of a harder wood such as
chestnut or
walnut. On the soundboard,
anjok (movable
bridges) support the
strings. These bridges move to adjust the
tuning and
intonation. The strings enter the top of the body from
tolgwae (string pegs) beneath. At the other end, the
strings wind around loops at the end of thick cords, which pass over the nut then looped through holes at the bottom of the instrument and secured, and then the cords are all tied in a decorative coil. The left hand presses the strings to raise the pitch, and finger movements perform various movements such as shaking, bending, and vibrating the strings. The right hand plucks or strums the strings. The ''gayageum's'' tone is soft, delicate, and subtle. Legend says the instrument was first made by King Gasil in the
Kaya Kingdom around the sixth century, and was further developed by a musician named Ureuk () in the time of King of Jinhung in the
Silla dynasty. According to some evidence, however, it dates to a much earlier time than the Silla dynasty. Recent archaeological excavations in the Kwangsan areas in Jeolla-namdo Province revealed fragments of a
gayageum from around the first century BCE. The
gayageum is employed in different types of music, leading to variations of the instrument, including the following: •
Pungryu gayageum is the original form, with more widely spaced strings for slower-tempo works. •
Sanjo gayageum is a smaller, modern version with more closely spaced strings to accommodate rapid playing. • Modern
gayageum instruments broaden the body and add more strings to increase the pitch range to accommodate contemporary music. == Music ==