Catgut Catgut Catgut is a type of cord that is prepared from the natural fibre found in the walls of animal intestines. Catgut makers usually use sheep or goat intestines, but occasionally use the intestines of cattle, hogs, horses, mules, or donkeys. Despite the name, catgut manufacturers do not use cat intestines. The word "catgut" may have been an abbreviation of the word "cattlegut". Alternatively, it may derive by folk etymology from "kitgut" or "kitstring"—the word "kit", meaning fiddle, having at some point been confused with the word "kit" for a young cat; The word kit, being derived from fiddle in
Musical instrument important, provides only possible classification for each instrument. The most common types of instrument classifications are strings, brass, woodwind, and percussion. An ancient Hindu system named the "Natya Shastra", written by the sage Bharata Muni and dating from between 200 BC and 200 AD, divides instruments into four main classification groups: instruments where the sound is produced by vibrating strings; percussion instruments with skin heads; instruments where the sound is produced by vibrating columns of air; and "solid", or non-skin, percussion instruments. This system was adapted to some degree in 12th-century Europe by Johannes de Muris, who used the terms