Type: Aerophones > Flutes > Notched.
Hornbostel-Sachs No#: 421.111.12
Region: Far East Asia.
Description: An end blown notched flute from Korea that is about 65 cm in length. It has six finger holes. The first of which, being the thumb hole is located on the back of the instrument. The treatise Akhak Kwebom [in Hangul: 악학궤범 in Hanja: 樂學軌範] compiled in 1493 specifies a cross-shape opening for the chok, a plug inserted into a tube similar approach in construction to a transverse flute.
Musical instruments with the name “chok”appeared in a large bequest of instruments for ritual music [aak] from the Song Era Chinese Emperor in 1116. The Akhak Kwebom [in Hangul: 악학궤범 in Hanja: 樂學軌範] 1493 indicates the chok was still used only in ritual music in the 15th century. This remains in practice even today.
Citations: Bibliography: Akhak gwebeom [in Hangul 악학궤범; in Hanja 樂學軌範] by Seong Hyeon 1439-1504 Historic Text ; Stanley Sadie ~ New Grove Dictionary Of Music ~ Pages 361-362 ;