Colotomic structure [colotomy](from Gk. kōlon: ‘section’, ‘limb’)
A term adopted by the ethnomusicologist Jaap Kunst in his work on the gamelan music of Java and Bali, to describe the phrase structure of the gendhing (‘piece’). Each major section of a gendhing begins and ends on a gong beat and is further subdivided into subsections and phrases by several other single-note instruments of the gong type; their function is to mark the skeletal melody (adapted and played by the metallophones in unison) at regular metric periods. Over a dozen different colotomic structures are in regular use, each with its own name such as ladrang and ketawang. A specific drum part is associated with each colotomic structure.
- J. Kunst: De toonkunst van Java (The Hague, 1934; Eng. trans., rev., 2/1949 as Music in Java, enlarged 3/1973 by E.L. Heins)